Backseat Booty

Author's note: Yay another backseat story! I always love these, and I've wanted to take a crack at one, so here we go.

***

"Alright guys, you know the drill. You all get in first. I'll load the woodwind stuff in the middle row, and you guys keep an eye on the percussion stuff in the back."

I grimaced at Victoria and Olivia and began to fold my big self into the very backseat of our beat up old van. Think like the Mystery Machine but with a third row. It was garishly painted in bright blue and red and the words spray painted on the side read "Harrison Family Music Rentals". The van was ancient, but in remarkably good shape.

Finally tucked into the back corner of the van, I did my inspection of the stack of drums, bongos, a few bodhrans (Irish drums), everything you'd need for a drum circle. The biggest drum was placed just behind me, easily removed by Dad for a quick escape to the bathroom.

Olivia and then Victoria joined me in the back row, and we were pretty squashed in there. Then the middle row was filled by the parents with luggage and then so. Many. Cases: Flutes. Recorders. Two saxophones. A tuba. And one goddamn didgeridoo. It didn't really sound that good unless my dad played it, but my summers had been filled with the sound of that derpy instrument whining, played by a hundred different kids at dozens of music camps.

Pretty much every usable space of the van was filled, but it was comfortable enough. Tori (Victoria doesn't like her full name) had tried to map out a better arrangement, swearing that her engineering mind should be up to the task. She had eventually settled on... exactly what we had already been doing.

This arrangement accounted for my long legs, and the back row had enough room for us to rest one at a time. Well, Tori and Liv could rest, if they swapped around and lay on me. Leaning against the wall of the van allowed me something similar to sleep. Sleep-shaped, but not quite sleep.

The instruments weren't piled so high that we couldn't see the front row, but they hadn't added the seating yet. See, instruments in cases tend to slide around moving vehicles. The solution, in my dad's mind, was big piles of bean bag chairs, for kids to sit on as they drummed. They held everything in place, but blocked most of the view to the front seat.

Again, this was not our first rodeo, so we knew that a visual to the front seat would be needed. So, once we were all loaded in, a head sized gap would be left from my seat in the back all the way to my mom's seat in the passenger side. The Peep Hole it was affectionately called.

Every other space in that old van was completely taken up.

"You guys comfy?" Asked my mom from the front row, turning around to smile at me through the Peep Hole. I got feedback from the girls and nodded. We were good.

Where my dad looked like a full on hippie (even though he's from the wrong generation), my mom looked like Rosie the Riveter. Short black hair done up in a bandana, a big grin on her red painted lips, super fit, but always with the most mischievous smile. She was brilliant, had homeschooled the three of us, which kept us all very close, and she had done a hell of a job of it. We lived near a pretty prestigious university, and all three of us had cruised right through the admission process, though paying off student loan debt would suck forever.

Mom even maintained the van. Dad always had a ridiculous collection of instruments, always collecting more and fixing them up; the rental business had been her idea. She owned and operated a garage, and had come across this hollowed out shell of a van. She had fixed it up good as new well over a decade ago, and my dad suddenly had a use for all his instruments. Supplies for music camps, summer camps, and other such places that would temporarily need large amounts of instruments. She could homeschool us on the road, so as long as her shop could run without her, we were good to travel whenever Dad found business.

But now we were in college, it got a little tough. This might be the last trip for a long time, next summer at the earliest.

"So where's this music camp?" Liv asked from right beside me.

"Van-couver!" Dad answered with a laugh, emphasizing the word 'Van'. We all groaned.

"Dad. That's the thousandth time you've made that joke, and it never makes sense. We live in Buffalo! That's like a forty hour drive or something!" Liv replied, which was a terrible idea and would only encourage the guy.

Dad sighed happily, "And yet it keeps making you oh, so mad, Livvy. And if you must know, we're headed to Portland, Maine. Navigation says it'll be eight hours and change, straight through."

"So, a minimum of twelve, with your driving," Tori sassed from the seat furthest from me in the back. Of course, we would be stopping, too, for food and bathroom breaks. We had a box of snacks and drinks back here, but

He rolled with it, "I could make it fifteen if your mom and I stop for a date." Mom flashed him a grin, eyes dancing with mischief. They always vanished after we got to our destination, taking the van to go on dates in whatever new place we went to. The three of us were stuck watching over the instruments and doing lessons. Now that we were adults, our parents had no such obligations. The seats all folded down, and we were pretty sure they had fucked in every possible configuration in this van.

The van started up with an intimidating rumble. No risk of this thing breaking down, my mom had upgraded the fuck out of the engine. Vin Diesel would weep. Yet my dad always drove like it was an inch away from collapse.

"Mom, out of curiosity, how quickly could you get us there?" Liv asked.

Dad choked on his own spit, sputtering and coughing. Mom hammered his back with a hand, while answering, "About six hours, I think."

"We're NOT letting the damn street racer drive," Dad said, finally getting his voice back. Mom actually had been involved with street racing, apparently, though they wouldn't tell us that story.

Mom leaned over and moaned, "Party pooperrr," like right in his ear. I could barely hear, but I saw my Dad's spine go erect, probably much like his dick. My mom was... inherently sultry. It was a problem.

Well, for me anyway. But all three of them were a problem for me.

Tori and Liv were of very similar build to my mother, petite and slender, but Liv had blonde hair in thick curls, where Tori had long straight hair that she had recently dyed auburn. She insisted it was auburn. It was really more of a bloody red, though. Think like the singer from the band Night Club. Tiny, skinny, gorgeous fake-redhead. Liv would then be more like Kate Hudson in Almost Famous, but with fewer accessories. Gentle smile, soft features, bouncy blonde hair. And tiny, jiggly butts and boobs on all of them.

Liv was calm and cautious, always wanting to know the details of things. Tori was a ball of sass. The three of us shared the same color, bright green eyes, yet Liv's were gentle and kind. Tori could flay you alive with her eyes. Mom's eyes, the fourth set of identical green, flashed mischief at me from the front, and she pressed play on her psychotic playlist as my Dad started to drive.

He would prefer the Beatles. The Rolling Stones. The Allman Brothers. Anything from the decade he desperately wishes he had been alive to experience.

Mom destroyed us all with the upgraded sound system and pounding death metal. I couldn't even begin to identify the band, though Tori let out a "Fuck yeah!" and rocked out immediately.

I'm sure Dad sighed. I'm sure of it. But NOTHING could be heard from the front over that sound.

"You good, Orrin?" Liv asked as quietly as she could from next to me. I nodded and patted her bouncy hair. She rolled her eyes; for all her gentleness, Liv was the oldest at 22, and me treating her like a kid was mostly how I infuriated her. Tori was 21, while I was a lowly 19.

"All good, sis."

She smiled and snuggled her tininess into my broad frame. Even with the bouncing from the slightly-too-old shocks, the death metal, and being squished in the middle seat of the back row of a cramped van, she fell asleep on my shoulder pretty quickly.

***

It was an hour into the drive that calamity struck. Mom hadn't upgraded EVERYTHING in the van, as evidenced by the shocks that caused us to bounce insanely. She had focused on the engine and the sound system. Essentials.

The seats also hadn't been upgraded, simply cleaned.

So I was laying there, trying to doze off, when I suddenly felt a vicious punch to my balls. I was wearing basketball shorts, pretty standard for a ride like this, and they provided absolutely no armor.

"HOLY FUCK!" I shouted, and the music cut right out, everyone turning to me with utmost alarm on their face. I wasn't a very talkative person, and me suddenly screaming was extremely out of the norm. I gave props to my dad for keeping his eyes on the road.

"Orrin?" My mom asked through the peep hole. "What happened?"

I wasn't quite capable of speech yet, as I was being rocked by the worst nausea. It hit me juuuust right, whatever it was. I felt my sisters' eyes on me in concern, but what could I do? I felt beneath me and my hand seized a spring that had burst through the seat cover.

"Spring. Seat. Balls." I groaned. I get it, it's a little funny, I didn't resent the girls, or my mom, for giggling.

"Fuck, you okay dude?" My dad asked immediately. Thanks for getting it, Dad.

"Sucked. That really sucked."

"I'll pull over," he said, and the immediate feeling of the van's tires on the road shoulder made me feel better.

In just a few moments, the back doors of the van were opened, the big drum removed, and I could do my awkward shimmy out. I took a few minutes to just breathe, occasionally facing away from my parents and feeling around my junk to make sure there wasn't any tenderness. There was plenty.

"You okay? I'm so sorry I laughed," my mom said, giving me a hug. She barely came up to my chest. My dad hugged me from the other side, shoulder height. Sometimes I felt like someone else's kid for how much taller and broader I was than everyone else. But I had my mom's eyes and my dad's straight platinum blonde hair, and there was no question.

"I think I'm good. Uh, Mom, can you take a look at the seat?"

She nodded and scrambled into the back, leaning over the back of my seat to look at the cushion. This placed her butt in a very tasty position, pointed straight out at us, wrapped in her cutoff booty short overalls. My dad was looking at it with a grin, and I tried my best to avert my eyes. It was difficult, but my dad thankfully didn't notice me looking.

"Alright, that sucks," Mom said, hopping out of the van. "It wasn't just that spring that failed, it cascaded on through to all of them. The seat is all kinds of borked. Um, Orrin. You took... a ton of force to your nuts, if they all failed together. Are you sure you're okay?"

Tori and Liv giggled again, watching us from the backseat. I just shrugged. "Feels okay. Nausea sucked." Dad nodded vigorously.

Mom grimaced and turned to my dad, "Vince, could you... do a visual inspection?"

He blanched, "Nope. You're the mom, you can do it."

"Yeah, but you have the same, uh, equipment."

"And you've seen his, you're his mother."

"I haven't seen it for like, a decade!" She was so red. It was adorable.

I stepped in, "I don't need a visual inspection! I'm not even tender anymore." This wasn't true, there was some, but it was fading.

"Fucking lies," Mom said, pointing at my face. "That's a lying face and you know it."

Fuck. You can't lie to a mom.

"Fine. If you won't look, get back in the van so he has privacy. I'll fucking look, you weenie," she said, glaring at my dad. It wasn't a real glare, she wasn't actually mad, she just liked to tease him. Dad turned and walked back to the driver's side, while Mom turned to me.

"Do we have to?" I asked.

"Unless you wanna go to the ER now?" She asked, cocking her hip with a little smile, emphasized by her ubiquitous red lipstick. She never wore any other makeup, it was just her iconic look. My heart was pounding, embarrassment warring with excitement in my gut.

"Fine, but... over here?" I gestured to the side of the van away from the road. She nodded.

I leaned against the van and my mom squatted down. This was so weird. So fucking weird. But also I wanted this woman so badly it wasn't even funny.

"Should I?" She asked nervously, reaching for my waistband. My hands were busy covering my face, so she just proceeded to take hold of my shorts and underwear and start pulling them down. I peeked between my fingers, and watched her eyes widen. I was half hard, even though I was mortified, and my dick popped free with little enough fanfare, yet her eyes were super wide. She said nothing, just kneeling there looking up at my dick.

That image would be burned into my mind forever, I was sure, my mom's gorgeous little pixie face looking up at me with my cock in between us, as it slowly hardened to full mast. I just barely reached 8". She gulped. "Umm. You're really hard," she whispered, a little huskiness in her voice.

I shrugged. "Seems like it's all working."

She kept licking her lips. "Definitely. That's, uh. Good. Can you, hmm, lift those a bit so I can check for bruising?"

Sighing, I took one hand from over my face and did so, lifting my balls and shifting them from side to side so she could see everything.

"Goddd," she breathed heavily. "Okay. Uh. Orrin. I have to ask. I don't see any swelling... Do you never cum? Those are the biggest fucking balls I've ever seen."

I blanched at the blatantly sexual question. "Not typically. Sexual energy is important, I try not to waste it."

She pinched the bridge of her nose, "That explains the sounds I heard a few weeks ago. Jesus, boy," she was seemingly breaking out of her stupor, sounding more like my mom.

I frowned. "A few weeks ago?"

"Yeah, you brought that curvy redhead home." She was still eyeing my dick. Not my balls, specifically my dick.

"Oh. Felicity. She was fun."

"You still seeing her?" Mom asked, seeming to want to extend the conversation. I wasn't going soft at all, and she let out a little gasp when a glob of precum started leaking from the tip of my cock.

"Uh. No. Not really my type. Just fun."

"What's, uh, your type?"

I cringed, and I don't know why I answered. "Petite. Tiny."

That described all three of them, Mom, Liv, and Tori.

She blushed harder, "Gotcha. Um. You seem fine."

She had been squatting on her heels, and she stood, but lost her balance a bit in the process. I was suddenly holding my tiny mom while my dick was out, pressing against her belly.

She made eye contact, "Eep." She didn't make an 'eep' sound, she said the word 'eep', totally calm. Mom maybe pressed a little closer.

"Uh, what do we do, mom?" I asked. I was referring to the seat, which I couldn't sit on, but I don't think she took it that way.

"What do you need, Orrin?" She whispered back, eyes full of concern and love. "Whatever you need."

I blinked repeatedly. What was she offering?

There was a knock on the window, probably Liv at my dad's request. There were no power windows on the van, and from the driver's seat he couldn't knock. Liv wouldn't be able to see me from that window, they were just checking on us.

"Everything okay?" Tori's voice came from the open back doors.

"He's okay!" Mom called back, the mischief in her eyes scaring me a bit. She bent down, rubbing against me alarmingly, and seized my shorts and underwear again. The head of my cock bumped against her neck, and she glanced down with a little smile. "Fucking ridiculous thing," she said quietly, and began to pull my shorts up. For some reason, she felt the need to pull my shorts up from the front, and her hand brushed against my cock as she fixed my shorts.

I decided the steamroller approach was the best path forward, ignoring it all, pretending nothing was happening. "Um. Where do I sit?"

Mom blinked several times, coming back to herself. She seemed to realize what had happened over the last few minutes. "Fuck. That was so inappropriate. I'm so sorry Orrin. Uhh... don't tell your Dad?" I shrugged and shook my head. It had all just kinda happened, it wasn't her fault, and she hadn't really done anything. "You'll have to sit on the other side. Vince!" She called suddenly.

Dad appeared, and Mom didn't seem to want to meet his eyes. "Sup?"

"We need to redo the trunk so the escape path is behind Tori. Orrin will have to sit in her seat, and one of the girls in his lap." She paled a bit as she said this.

Dad frowned, "His lap? That's not very appropriate."

"Yeah, but what can we do? We have a schedule, we have to get to Maine today. I can work on fixing the seat once we get there."

"Ugh. Okay. Orrin, help me out?" I nodded with a grunt and began taking drums and other percussion stuff out. Dad mostly just let me work. I'd long been the workhorse of the family, it was fine.

"So what's happening?" Tori asked.

"His seat is borked, you two have to sit on his lap," Mom said succinctly. She held up her phone, and both Tori and Liv checked theirs. They went back and forth in a group chat that I wasn't in, and there were so many giggles that followed. I turned my back to ignore it all.

A few minutes later, the girls both nodded, "Okay, we can make it work," Liv spoke up for both. Liv got up and carefully sat on the damaged seat, while Tori moved to the middle seat. "Oof, this thing sucks. Sorry, lil bro, that must've hurt like hell."

"Yup. Not great," I said as I climbed in. Dad lifted the big drum with a grunt behind me, slotting it in the last available space. The peep hole was only in front of the damaged seat, so the girls and I were in our own little world.

Liv, apparently the first victim, crawled over Tori's lap and into mine. I wondered how they came to the conclusion that it was my lap they had to sit in. Tori could've held her, right?

"Gotta hold me in place, lil bro. Seatbelt won't wrap around us both." Liv smiled warmly down at me as I wrapped my arm around her belly.

"Okay, we're good Mom!" Tori called, ducking her head around to look through the peep hole.

"Okay, we're back on the road. Holler if you need to stop," she replied.

The van started to move, and the motion made Liv lean back on me, no longer just on my knee. She wasn't on my lap, specifically, just perched on my knee with her back on my chest.

I was grateful she wasn't sitting on my cock. This could work.

"You two doing okay?" Tori asked quietly. Mom had switched over to Simon and Garfunkel to appease Dad, so it wasn't too loud.

"I'm okay," Liv replied. I just grunted.

"Neanderthal," Tori chuckled.

"Me ape man, why use word when no word work too?" Liv jumped in, making monkey sounds and pounding her chest. This motion caused her to slide back on my knee a bit, and I hissed. I had never gone soft after WHATEVER that was with my mom, and Liv's tight little ass made contact with my cock. Liv was soon fully on my lap, the momentum of the van causing her to slide back into my chest.

Tori smiled fondly at me, "It's okay, we love our quiet little brother." She hugged my right arm, the one that was wrapped around Liv's belly.

Olivia grinned, "I bet I can break him. Get him to drop the stoic act." she said significantly, looking down at me. Hmm.

Challenge accepted.

Liv and Tori went quiet and were soon looking at their phones, giggling repeatedly. Back to the group chat? I couldn't even look at my phone with Liv leaning against me like she was. I sighed and looked out the window, the ubiquitous green of the east coast in summer sliding on by.

My phone jingled, a rare enough event for me, and I grabbed it, awkwardly looking over Liv's shoulder to see it.

'You okay, Orrin?' My mom asked via text.

'I'm good. None of you three weigh anything, this is no big deal.' I replied.

"Oh, sorry Orrin," Liv said, and she leaned forward. "Here, you can have a bit of room to look at your phone if you put your hand kinda on my back."

So my right arm was wrapped around her, holding her in place, and my dominant left hand held my phone against her back. Unfortunately, the way she was leaning put more pressure on my dick. I grunted.

"Oh dang, Mom was right. Daaaamn." Liv said casually, typing on her phone again.

"Really?" Tori replied.

"Mhmm."

My mom's laugh was audible from the front seat, followed by murmurs that I couldn't decipher. Probably dismissing her laugh as a meme or something. Meanwhile, Liv started to wiggle her butt on my lap. I grunted again, tightening my arm around her to get her to stop, but that just increased the pressure. I groaned and my cock flexed involuntarily.

"Naughty, naughty, Orrin," Liv whispered.

I just grunted.

'Don't be grinding on your sister, Orrin! Naughty boy!' my mom sent.

Ughhh. They were clearly fucking with me. I couldn't react, though. I was supposed to be stoic. Unresponsive. Let them do their thing, they wouldn't break me.

Liv was wearing short shorts, little gappy things that left her entire legs exposed. She continued her little wiggle, and I didn't have it in me to try to stop her, just closing my eyes and leaning my head back against the seat.

Her little ass felt incredible. She had started to circle her hips gently, and the motion caused her shorts to ride up a bit, exposing some of her cheeks. From this position, her pussy was placed directly on top of my cock, and I could feel some significant heat.

"Fuck," she whimpered.

I fought down a gasp. What was this? Why was she doing this? The sensations were incredible, and I was so fucking hard.

I felt a hand on my arm, gently caressing. Tori. I refused to look at her, too, just holding Liv in place as requested, while watching the scenery go by.

Liv was circling faster, little helpless whimpers audible for all three of us to hear. The pressure slowly increased, and her hands were at work in front of her, her phone apparently set on Tori's lap. Was she pinching her own nipples? Back and forth she rocked, urgently. "Haahh, God he's fucking huge," she whispered. "So much to grind on. Fuck, little brother. Ungh. Oh God. Oh fuck me." Ughhh, the way she said that, I desperately wanted to fuck her already, and it wasn't helping.

As I said, we were in our own little world, cut off from our parents, and the music was still pretty loud. 'Bridge Over Troubled Water' was playing, and at the peak of the song, I thought Liv was just singing along. The long, extended line "I will ease your mind" was sung loudly on the speakers, and Liv nearly matched the note. Nearly.

But Liv wasn't singing. Her body was locked, her back was arched, and she was grinding on me hard, an orgasm rocking her little body, and she shamelessly sang out her pleasure until the climax of the song ended. She was still cumming, grinding on my cock, but she was quiet about it, muffling herself, letting out only little gasps.

Finally, with one last circle of her hips, she sighed and settled back against me. "Mmm that was fucking awesome, I came sooo hard. Guess I didn't break him, though."

"My turn!" Tori called.

"Gimme a minute, Tori." Liv took my hand on her belly and kinda hugged it. She twisted in my lap and gave me a happy smile.

What the fuck? I opened my mouth to ask that exact question, but... I didn't. I was just along for the ride. Whatever ride this was. Tori giggled when my mouth closed. I hadn't lost their challenge.

A little over a minute later, the two of them swapped, and Liv peeked through the peep hole to give a thumbs up to my mom.

'Ooh nice job Orrin. Maybe a little grinding is okay.' Mom messaged me.

I didn't respond, it wasn't my place. They were the chaotic ones. They would do their thing, I guess take advantage of my erection, and I would just have to focus on not cumming. Ugh. Would I be able to find someone to alleviate my tension at this camp? Usually the camp counselors were in their 20s, I could often find someone to fuck at these things, after the kids were down for the night.

I really didn't want to cum in my pants, and as Tori settled in my lap, directly on my dick, I knew it would be a challenge. I just really hated to cum outside of a girl, y'know? It felt like a waste of good cum. Good energy. Something I picked up from my Dad and his hippie nonsense, I guess. But every girl I'd ever been with has been very appreciative.

Tori shamelessly settled into a rhythm, and I groaned as a new, hot, sister pussy began to grind along my length. Liv leaned against my arm as Tori had, kissing my shoulder and caressing my arm.

Absolutely merciless, the two of them. I just breathed, my cock occasionally twitching, holding Tori by the hips this time. Maybe I was pressing her down a little harder, but I was just hoping she would get off faster so she could fucking stop it. Like, of course I was turned on, but I wasn't gonna cum this way. I could, but I refused.

Ugh. Her hips were so slender, though, her waist was teeny tiny. Exactly my type, though that definitely had something to do with growing up around these three specific women. I slowly lifted her shirt as my big sister ground her pussy on my cock, and I settled my hands on her bare waist, marveling at how far around her waist I could reach with my hands. She gasped at the contact.

She moaned quietly, hunching her back to, presumably, force her clit down harder. The moan that followed was hardly quiet, but I really doubted my dad would hear. Too much going on, with the music. I thrust my dick up harder, gritting my teeth. I was getting kinda close, my balls beginning to churn, and my principles felt a little flimsy right now. I could just cum in my pants. Just this once.

It would be a HUGE mess, though. Two weeks of buildup before getting set off by sister pussy. That would be a cataclysm of cum.

My cock flexed again, and that sent Tori off. "Oh fuck oh fuck oh fuck, ORRIN!" It came out as a shouted whisper, and her hands passed mine under her shirt to pull on her small breasts. Tori's shorts were similar to Liv's, loose, short, and gappy. Her cheeks were halfway exposed from the grinding, but that was soon hidden as my big sister leaned back into my chest, riding out the rest of her orgasm.

I wanted to pull up her shirt to see her breasts. I was looking down over her shoulder as her fingers pinched her nipples beneath her soft black top, and I could just see a wet spot forming in the front of her shorts. Liv had pulled up my right sleeve and was just kissing my shoulder. It was all so surreal. I kept my hands where they were, on her waist and belly, directly on her skin but not exploring.

It was not my place to push the envelope. I kept telling myself that as I forced my orgasm down with deep breaths and thoughts of baseball. I could NOT whip out my dick and jerk off over Tori's entire front side. No. They were trying to make me break, and I refused.

Finally, Tori settled down. She took my hand from her belly and kissed it gently, before putting it right back where it was. She sat, calmly enjoying the afterglow for a few minutes.

"You looking forward to school starting back up, Liv?" She eventually asked. And just like that, they were back to normal.

'Ooh, good one Orrin. Liv said Tori came super hard.' My mom messaged, with a kissy emoji.

I lay my head against the wall with a groan. Two hours down. A billion more to go.

***

We stopped for lunch half an hour later, and I was absolutely agog at how nonchalant the girls all were. Dad made Dad jokes, the girls groaned and laughed. They made fun of me for being my silent self. It felt... normal. Other than the fuck-me eyes my mom kept giving me.

After lunch, it was time to get going again. Liv got in first, and I followed after. I wasn't paying attention to the little whispered debate going on outside, lost in my own world. But I definitely noticed when my mom settled her weight on my lap.

Oh God.

"Giving Tori a chance to stretch her legs in front," she told me with a smile.

"Tori's music is better anyway," Liv teased.

"Hey! You take that back!" Mom replied, swatting at her daughter in a way that made her slightly-larger butt wiggle on me delightfully.

"You alright back there, Miranda?" Dad called.

"Uh huh!" Mom replied, locking eyes with me. Those little wells of pure mischief were enchanting. Terrifying. Dad put the car in drive, and Brittney Spears started playing on the speakers.

My heart was pounding, and my cock was hard. This was such a bizarre day. Wild. I had never been so horny in my life.

Mom adjusted her bandana, which allowed me to enjoy the way her overalls hugged her body. Emphasized her smallish breasts, larger than either of her daughters'. Her overalls were cut off to make booty shorts, a look I rather loved. But she wasn't having any of it, apparently.

"These definitely won't work," Mom said, and unhooked the overalls.

"Mom!" Liv gasped, scandalized.

"Well I can't exactly cum with those on, can I?"

So they were just saying it out loud? Oh fuck, she was taking them off. She did a sexy little wiggle, standing over my knee as she forced the overalls down around her ankles, leaving them on for ease of re-dressing, probably. Her bubbly little butt was wrapped in tiny white panties with black and red hearts all over them. Adorable. I groaned as she settled back in, and I was hard once more.

"Ooh, much better."

Her pussy was just as hot as my sisters', even separated by three layers of fabric. I hated those layers at that moment. This was going to be pure agony.

Where Liv and Tori had taken their pleasure in a very sexy, needy way, my mom moved with the sensuality of an experienced, sexually active woman. She was in her early 40s and incredibly fit. Her body rolled and ground in ways that Tori and Liv couldn't yet match, and the gasps that poured from her lips were the sexiest I've ever heard.

"Holy fuck that's a big dick. Where the fuck did you get this dick, Orrin? Your body, too. I swear I've never cheated on your Dad, not once, he's absolutely your Dad. Yet here you are, huge and manly and I CANNOT resist. Fuck."

Well that answered that question. No 'agreement' between them to let her have her fun. I'd been with an older lady that insisted that was the case, though I never had the chance to verify, as I never saw her after that night. I guess Mom was being very naughty, Dad be damned. I would feel bad about that later, for sure, but I was too horny right now.

Mom continued her rant, still pretty quiet but rising a bit in volume, "God, Livvy. I pulled his shorts down earlier and he made me watch him get hard." That wasn't what happened at all, but Liv giggled. "Going from half hard to full and huge just right in my face. Who does that to his mother? Unghhh. So mean! And he hasn't said a word this whole time!"

I grunted, and put my hands on her waist like I had with Tori. She had been wearing a crop top under her overalls, and her navel was bare. Outrageously sexy.

"God, even his hands feel amazing. Orrin, you fucking beast, rub that cock on your Mommy's pussy. Help me cum. I need it so badly after you fucking teased me earlier. I offered, Orrin. Whatever you needed. You didn't take my offer, and this is your punishment. You don't like to jerk off, hmm? Don't like to waste your sexual energy? Better hold off then, while your Mom gets off on that big dick. Fuck, Orrin." The sensual rocking was gone, replaced with a needy humping motion, focused on the top of her pussy, rubbing her clit against the head of my cock.

"Holy fuck," Liv whispered beside me, her voice tense, her phone in one hand pointed at us. There was some definite rhythmic shaking coming from her. I didn't have it in me to check, but I was pretty sure she was masturbating. "Do it, Mom. Cum on that dick."

"I'm gonna fucking do it, baby girl. I'm gonna cum on this big dick. Fuck. Fuck. Fuck. FUCK. FUUUUCCCKK MEEEE!" She moaned loudly. I held her tight as her body went tense, my arm across her belly and one on her hip, using that as leverage to pull her down harder on my cock. Helping her cum. At the same time, I was holding back my own orgasm with an iron fist.

I. Refused. To let them win like this.

Liv stopped masturbating and ducked around to the peep hole, and then back. "Dad didn't hear anything, don't worry Mom."

"I couldn't caaaareee right nowww baby girl. Cummmmminnnggg..." she just kept going, and she leaned back into me like Tori had, wrapping her arm around my head, lacing her fingers in my hair. She looked me right in the eyes as she came. "So fucking sexy, Orrin," she whispered. "Thank you for letting me use you like this..."

Mom gave me the gentlest little peck on the lips as she came down. Just one.

Finally done, she carefully moved her butt to the other side of my lap, most of the pressure off my cock. I breathed, fighting down the beckoning horny madness.

"How are your balls, Orrin? Tender?" Liv asked with a grin.

"Swollen," I replied tersely. This wasn't breaking the rules, it was a direct question I could answer about the injury I had taken.

"Aww. And you're trapped in those shorts. Should we let it out?" Liv's puppy dog eyes were legendary. I gritted my teeth and said nothing.

"Poor baby," Mom said, caressing my face. "And poor Tori, she missed that."

"Nah, I recorded it. She'll see it in a minute, once it uploads," Liv replied, holding up her phone.

"Oh good!" Mom cheered. "Liv, you okay with another swap? Up to the front with you?"

"Hang on, I didn't cum when I was masturbating earlier."

So she sat on me and ground her pussy on me until she came again. With a snarky grin, she first removed her shorts. "Mom did it, I might as well join in." She was just wearing a thong underneath, and the contact was so much more intense this time, and I loved the sight of her little cheeks. She wiggled it for me a few times before she sat. I enjoyed the feeling of her bare skin, touching her in the way I had the other two. I hadn't gotten to do this with her the first time. But I was absolutely aching by now.

Afterwards, they made Dad pull over, only a little past the three hour mark. We all got out to stretch. "What is this, musical chairs?" Dad asked. Mom gave him a sultry kiss that I would classify as 'cruel'.

"Just hang in there. If you're a good boy, I'll reward you for your patience." Mom bit her lip with that adorable smile. "Besides, I realized something." She opened the side door to the second row. "With the damaged seat, we can move some stuff around and make more legroom in the back." She had me pull some of the luggage out, though she was specific as to which luggage, and it made more room on the ground in front of the second row seat. She then pulled the bar at the bottom and slid the seat forward. That would give me a whole extra foot of legroom in the backseat, which would be heavenly. The luggage went onto the damaged seat in an oddly specific order, she insisted.

The girls swapped around, Liv in front, Mom in the middle seat, and Tori on my lap. She didn't immediately start anything, and I was glad.

"Orrin, aren't you hot back here?" My Mom asked, the very picture of innocence. "You should take this off." She plucked at my shirt.

I was definitely overheated. The backseat didn't get that much airflow, and the girls were working up some heat with all their grinding and wiggling and constant orgasming on me. I shrugged and stripped my shirt off.

"Goddd," Mom repeated, staring at my chest. "You have so much chest hair for a teenager. When did my son become such a goddamn beast?"

Tori turned around in my lap, using the extra foot of space to her advantage. She and Mom spent a few moments running their hands through my chest hair, and I just sighed. I shouldn't have been so naive as to think taking my shirt off was innocent.

They both played with my nipples, and it sent a surge of arousal to my cock. The spot over the tip of my cock was wet with precum.

Tori's hand strayed lower, over my belly, and both Mom and I just watched her go. She was seated on my knees, with full access to my lap if she desired.

Her fingers caressed my leg, just next to my bulge. With a wicked smile, one single finger made contact with my cock.

CRACK!

She yelped and held her hand, looking at me in alarm. I had slapped her hand.

I couldn't take much more teasing, and having four dainty hands all over my dick would set it off in no time. Better to stop that train before it could gather steam.

"Fuuuuccckk," Mom whispered. "Orrin, you have to tell us. What do we have to do? Do you want us on our knees?"

I didn't answer.

"Ugh. Fucking Neanderthal," Tori said fondly. "Mom, he won't tell me to suck his dick. Should I suck his dick?"

"Do you want to suck it, baby girl? Do you wanna swallow your baby brother's cum?"

"So badly, Mommy."

"Then I guess you'd better try. See if he'll let you. Is that okay, Orrin? Can Tori suck your dick?"

I didn't respond, and Tori reached for me again, hands shaking as they got close.

CRACK!

She squeaked as I smacked her hand again. "Fucking OW, Orrin!" I grinned, unable to resist. She deserved it. "You won't let me suck your dick? Your cock? Look at that thing, I want it to explode in my mouth. Why won't you let me?" Tori pouted.

I had a rule. First load goes inside.

Well that's not true. I NOW had that rule, as of seconds ago. I decided I could push the envelope, too. It had been weeks since I last came, and a blowjob from my sister wasn't how I wanted to break that streak. Give me fireworks or nothing.

I said not a word.

"Mommy, I'm not on the pill..."

"Tori! Why the fuck not?" Mom gasped.

"I'm single and I forgot to take them this past week," she shrugged.

Were they seriously just talking about fucking me right now?

"Well I'm not putting him in my pussy, that's cheating," Mom muttered. "Good thing I brought supplies." She dug into the suitcase she had made sure to set aside. In a few moments she popped back up with a bottle of lube. "Here you go, Tori. He's all yours." Holy. Shit.

Tori blinked. Looked at the lube, looked at my cock in my shorts. "No fucking way. Nope," she said firmly.

Mom shrugged, "Then your brother doesn't cum."

That was fair. They didn't have to keep doing any of this, I could be a big boy and just not cum. Or I could break my brand new rule if I couldn't handle it. If I found I couldn't hold back, Tori would blow me. I just had to break first, and ask her to do it.

I leaned my head back against the seat, settling in for a long stretch of blue balls. It was a familiar enough experience, though this would probably be the worst ever.

Tori harrumphed and wiggled around. I ignored her, eyes closed. "Like this?" She asked.

"Mhmm," Mom replied. And there was a lot more wiggling. A whimper.

I was surprised to feel my shorts being tugged at, and I opened my eyes with a frown. Tori was bottomless, and I was astounded by her beauty. Perfect, narrow waist, hips that were only wide in comparison to that narrow waist, a tiny red landing strip over a pouty little pussy, matching the dyed hair on her head.

Fair enough. If she was gonna ride me, it was on her to take the morning after pill. Or... I loved her to death. I would love our kid, too, if it came to that.

I raised my hips, letting the two of them pull my shorts down.

"Jesus fuck," Tori muttered as my cock popped out. "That's gonna go inside me?"

"And your sister if I can arrange it," Mom said. Holy shit. Tori looked super conflicted, watching my cock, which was resting on my belly. "Sorry baby girl, this is going further than I meant it to. I really just meant for some silly fun. Drain those big balls, y'know?"

Oh, so my Mom had arranged it all on their group chat. That made sense. It was my refusal of the blowjob that was making it go this far. Nice. I kept the smile from my face, focusing on just being their plaything. That seemed like the whole point.

"Yeah, I know Mom." Tori gulped. "It's unethical to leave him like this. Just wrong. And if he won't take the blowjob, well..."

Tori climbed into my lap, red hair falling in front of her face. She smiled her beautiful smile, delicate features showing nervousness, happiness, lust. I really wanted to break my silence, to show her how I felt about her, had felt about her for a long, long time, but I was committed to see how far I could make them go with my silence. This was too hot. Confessions could follow after my cum was planted deep inside her.

"Lay back, Orrin. Close your eyes," Mom said with a smile. She had undressed again, back down to her panties and crop top. She looked so sexy. I grunted and did as she asked.

Tori breathed deeply, and rubbed her pussy against my cock. I was about to raise my head and look, but Mom petted my forehead and made shushing sounds. Like I was a baby. I stayed put, enjoying the sensations of my sister's scalding pussy on my length.

"Okay. Go for it, Tori. You got this."

Tori took me in her hand and moved me up, and pressed down. I felt an intense pressure on my cock, and then a soundless popping sensation. Tori and I both let out a deep groan as I was pushed into her gripping, burning hole. And then, that poor girl, we went over a pothole.

The backseat was always a bouncy place, but the shocks were due for an upgrade, too, so it all compounded on itself. When we hit that pothole, we dropped down really far and then back up. It wasn't a violent bounce, in that we didn't go side to side at all, but it had a lot of downward momentum. I was trapped in place against the seat, but Tori was not.

In one go, she took my entire cock, and I accidentally absorbed the upwards bounce with my hands on her hips. "UGHHHHH!" She screamed, and Mom clamped her hand over her mouth to silence it.

By this point, my eyes were open but I couldn't see anything, as I was lost in the most intense, gripping, burning sensation I've ever felt. Tip to nuts, I was completely engulfed in the greatest feeling ever. She clamped down on me like the fist of a titan, but good Lord it was amazing. I realized I was groaning.

Finally able to process the sensations, I looked down at our joining, confused. The angle of her hips was wrong, her pussy was too far forward. I wasn't in her pussy.

I looked up at Tori's face in wonder. I wasn't supposed to acknowledge this, at all, so I just stared.

"Fuuuccckkk," she hissed. "Allll the fucking way, God damn." Just like mine before, her eyes were wide but she didn't seem to be seeing anything. "Holy fuck this hurts. I've never done anal before and I just did all the anal."

Mom rose, having barely kept her balance during the bounce. She ducked her head through the peep hole, and I could see her shaking her head. I turned back to Tori, who was breathing deeply. Mom came back, "Okay, Dad didn't notice her scream over the goddamn trash pop music. No suspicion of extremely naughty incest at all. Liv wants to murder you both, though. She's jealous." Mom shrugged. I noticed she had her phone in hand, probably recording the whole time.

"I think I'm dead already," Tori said. "My innards just got punctured, I'm sure."

Mom scoffed, "You're fine. I bet it already feels pretty good."

"Noooo," she whined, "I'm not a slut."

With an evil smile, Mom seized her shoulders and pushed her down an extra quarter inch. The moan that came out was all pleasure. "Slut."

I was torn between remaining silent and letting her ride me, and holding her, telling her I love her. I could make it better, but that would break our little game.

Mom came to the rescue, "Ride him, Tori. Use your ass to make your brother cum. It'll hurt, but you've teased him enough. Years. Make him cum with your tight ass, make it up to him. Besides, I bet that big dick makes you cum first, anyway. Sexy little slut."

"Fuuuuccckk, Mommy. Watch me get buttfucked by your son." Tori rose up a bit, and then lowered herself back down, her asshole gripping me fiercely. She looked down into my eyes with a smile, rocking her hips, "I know you won't break, little brother. You didn't break on that first thrust, I don't think anything will do it. But, ahhh, please know, I LOVE this. This isn't exactly how I imagined our first time, but I've spent plenty of time imagining our first time." She must've seen my face soften a bit, because she quickly added, "I don't WANT you to break. I love using you like this. But promise me you'll make love to me soon." I just nodded.

"You were already into him, Tori?" Mom asked breathily. She had a hand in her panties, slowly working.

Tori started picking up the pace just a bit, though I could see how much she felt every movement. "God he's huge. But it's so good. Fuck, I didn't know anal could feel like this. Is it because it's Orrin? God it's amazing. Haaahhh! But yes, Mom. I wanted him so badly. Since he started college last year." This was news to me, but it made my heart soar. She rode me quickly now, and her ass was like a vice the whole way, squeezing and burning me lovingly.

Her ass slapped into my pelvis loudly. She was taking the whole thing with each thrust now, and her eyes were rolling each time, a deep moan pouring out of her. Mom was whimpering, rubbing herself frantically while watching us, watching Tori give herself to me in such an intimate way, while I just didn't react. I held Tori's waist in the way that we agreed was okay, and let her shove my cock in her ass over and over and over.

"Oh God. It's so good. Take my ass, Orrin, it's all yours. Oh God. Oh fuck oh fuck yes Orrin!" Tori rambled as she rode me hard in forceful, full length thrusts, squeezing and burning me. "Oh God I'm gonna cum. I'm gonna cum! Hnnnngghhhhh AAGHHHHHHH!" She started to shriek, but Mom cut the sound off the hottest way possible.

With a horny whine, Mom kissed her.

Tori's eyes shot open, and her orgasm went through the roof at the first incestuous contact from her mother. I could still hear her screaming, but it was muffled into my Mom's mouth, barely audible over the music. My balls were churning so hard, I was so close.

As Tori writhed, the end of her climax approaching, we hit another pothole. Tori bounced again, the deepest yet, and the extra depth was apparently enough to hit a new bundle of nerves. Her scream redoubled from my new depth in her ass, her eyes rolling, and she broke the kiss with my mom. Her eyes were wide and unseeing, and she tried to scream "oh my God" but no sound came out, and my big sister fucking squirted.

And finally I came.

My sister's tight, clenching rectum milking me for all it was worth, I fired the first shot of my long built up load in her ass. Tori collapsed, breathing and squealing as I mindlessly thrust up into her, thrust after thrust, thick shot after shot of brother cum, right into her asshole. I was barely aware of my Mom cumming next to me. I was barely aware of Tori biting down on my collarbone to stifle the sounds of her ongoing orgasm. I just grunted and groaned and thrust and poured my cum into that perfect girl's perfect hole.

"Ooohh little brother. Cum in me, cum forever in me," Tori cooed, finally coming back to some kind of sentience. I could feel her clenching her ass on me rhythmically, on purpose, to give me more pleasure. "Fill me up, baby brother. I love it."

Two weeks of buildup was maybe too long. My orgasm seemed to last for ages, and at some point Tori started giggling at each successive wave. Finally, I slumped back against the seat of the van, spent. Well, sort of. I was tired, but still hard. How could I not be? Mom promised me another sister to fuck.

"Oh fuck, Orrin. That was amazing," Tori said quietly. I noticed Mom had her phone pointed at Tori's ass, our connection, recording it all.

"Tori, can you pull him out slowly?" She asked.

"It's gonna be a flood, Mom," Tori replied. Mom held up a towel, already prepared. Tori reached back and grabbed hold of me, slowly rising up and letting me slip out, but staying perched there for the video. "Ooohhh I can feel it pouring out."

"Jesus. So fucking much. Hoooolly fuck Orrin. You beast. You monster. You sexy fucking thing. I can't fuck you, but I so want to. Hnnngh! Well, maybe I can be a different kind of slut."

She ducked her head down and Tori let out a giggle. "She's licking it all up as it pours from my ass," Tori explained, biting her lip and shaking her butt in my lap. "Go ahead, Mom. I'm clean." I watched her eyes roll back in her head as Mom went ahead and plunged her tongue into her ass. "Ooh yeah Mom, clean my ass for me. How's his cum taste?"

"Mmmffhhh!" Mom replied, and it was a happy enough sound. That's good, I guess. I apparently have tasty cum. Mom spent a minute licking everything that leaked out of Tori's butt, and I was soon twitching, anticipating the potential naughtiness she could inflict on me. I soon felt two dainty little fingers take the base of my cock. "God. How can I justify sucking your dick right now Orrin? I wanna, cuz it's nasty and that's hot. But I've never done that for your Dad, and he's been in my butt often enough. And this wouldn't even be my-"

Tori shoved her down on my cock with a laugh. Mom sucked my cock clean with gusto, moaning like the nastiest slut, which is really what she was being so it made sense. Her mouth felt amazing, but this wasn't about me. Mom's eyes were rolling in her head, her breathing was heavy, she was loving this.

"You're so nasty, Mom," said Tori.

She let me fall from her mouth, "I knowww. I haven't been able to be nasty in a while."

"What's that mean, specifically?" Tori asked.

Mom sighed, "Depends on definitions. Your father and I have had our share of almost-threesomes, mostly with Deidre." We called her Aunt Deidre, though she was just a family friend. "She got to blow him, so I got to blow other men. Maybe a dozen of them, one time each." She gobbled me down for a moment, hungrily. "He never took it further, so I didn't either, but it was still pretty naughty. This, if I include the grinding, would be the closest I've ever come to cheating." She sucked me down as deep as she could, looking up at me with questioning eyes. Looking for judgement.

I tried to convey love through my own eyes, and her smile around my dick suggested I succeeded. "Maybe stop here, though?" Tori suggested. "Swap back with Liv, I'll be here for her through whatever she wants with Orrin, and we remove you from temptation."

I didn't want her removed from temptation. I wanted to fuck her. But that wasn't my place, she wasn't offering it right now.

Still half naked, Mom leaned over to the peep hole, "Vince? How do you feel about some more musical chairs?" She asked over the music. Whatever Dad said wasn't making her very happy. She pulled back and looked at us. "No dice. He's not stopping for another hour. Tori, keep me away from Orrin, please. I'm so fucking horny but I don't wanna ruin my whole life right now." She made eye contact with me. "I love your Dad, I really do. You know I do. You just... really rev me up, Orrin."

I nodded my understanding. She drove me absolutely crazy with lust sometimes, so I could hardly judge her.

"Well we should put his dick away, right?" Tori asked. She had moved to the middle seat, leaving my lap or the spot by my feet for Mom, who was awkwardly perched on the damaged seat. Tori was still bottomless.

"You could try, but he's still so hard. I just don't have the heart to put him back like that."

"So we have to keep going until we wrangle the snake into submission?"

"Well, think of it this way. If you find a way to make that thing vanish, it'll save my marriage. Also, he just came, and won't cum again for a bit, most likely." Mom gave Tori a significant look. "What can you do with an infinitely hard cock that won't cum?"

"Anything," Tori whispered. "I could just ride him..."

My phone jingled. Liv.

'You fuck her again and you die.'

I showed them the message. Tori tsked, but Mom spotted something in the text chain with Liv and plucked my phone from my hand. Oh shit. That's not good. She scrolled up.

"You two flirt a LOT." I hadn't considered it flirting, necessarily. She swiped over to my texts to Tori. "Damn. Same here. What's that about? 'Well no one's as pretty as my big sister'? A thousand heart emojis between y'all. Oh here's a block of text from Orrin, gushing over... your new hair color."

Tori giggled, "Orrin's not that stoic when he writes. He's a big ol' softie over text."

"Man what the fuck, how come I don't get to know this side of my son?" She glared up at me. "It's adorable!"

"I think he struggles to express himself in person," Tori said quietly, coming to my defense. "Liv and I just started texting him a bit more because we were in college together. Normal stuff, like wanting to meet up while we were on campus together. That kinda stuff. But he's so sweet over text, and in person he's this big, calm, lovable Neanderthal. Liv and I both kinda... fell in love." She made eye contact, blushing, and I knew she completely meant it.

I swallowed hard. That was new information, for sure. I had been surprised by their responses to my words over text, they always seemed so happy to hear from me, and it was the one way I could express a piece of how I felt about them. I didn't know they reciprocated my feelings. My throat was tight, and I was a bit overwhelmed.

Mom was watching me with interest. "Fascinating. Like, I'm jealous, but I'm also not in love with him. I'm just exceedingly horny today." Mom took a deep breath. "Okay. Liv says Tori doesn't get any more. So I guess I'm sitting on his lap until your dad pulls over." My mom smiled at me and immediately dropped her panties.

I was still committed to not reacting. I don't know why. I think I liked the idea of them using me to get off in whatever way they wanted. Other than slapping Tori's hand and my helpless thrusting during my orgasm in Tori's ass, I hadn't reacted or responded to anything they did.

My mom dropping her panties almost made me break. There was a perfect little triangle of hair above her pussy, and a line of girlcum dribbling down her legs. She smiled at me and crawled over Tori and into my lap. "Let's see if we can keep you ready for my lil Livvy, hmm?"

She sat crouched over my knees, facing me, her gorgeous pixie face a few inches from mine. I wanted to kiss her, but I just watched. She planted her pussy lips on the base of my cock, and began to slide up and down. The heat was intense, and I had to hold in a gasp. Her breath was in my ear, little moans and gasps as she worked herself to an orgasm, with absolutely no protection between us. If she just lined herself up...

She did not. Her first orgasm overtook her in just a minute, and my cock was soon very, very wet. I held her hips so she didn't fall (totally allowed!) and let her grind. I wanted to see her breasts, see her pussy up close, so many things, but I was a plaything right now, and Mom was getting off on me.

With a ragged breath, she came down, and I saw in her eyes the desire to kiss me. Instead she just kept grinding. And grinding. And grinding. Her small body rocked on me in sensual waves, and I adored every motion.

Three small orgasms later, she was visibly tired, and my cock was aching, twitching. Dying for more stimulation. Mom was losing her composure a bit, her careful form beginning to slip, my cock going a little closer to her hole, though I can't tell if it was an accident. I say that because she kept letting my cock snag on the entrance to her pussy, and each time she would whimper. Her eyes were nearly crazed, the mini orgasms must just be making things worse.

I could push her off me, get some distance. She was clearly at war with herself, her desire to be faithful to my dad in conflict with her desire for incestuous cock. And her reaction to my size was kind of telling, as well. I've heard them going at it, my dad certainly could satisfy her, but maybe I was bigger than him and it was making her curious.

Obviously I should finally break character, lose my sisters' challenge, stop letting her use me like she was, and pull my shorts up. Obviously.

My cock snagged on her pussy again, firmer than ever, fully caught. She'd have to raise up to release me. Mom's eyes were wide, a little panicked and extremely horny. She had to stop. I needed to make her stop.

I gasped as she shoved down, half of my cock vanishing into her heat in moments. She was as tight as any woman I've been with, and I was already so stimulated from the grinding. This was bad, but sooo good. She started shaking.

"Ohhh fuuuuccckkkk Orrin you're inside me. Inside your Mommy. That's so naughty of you. You're making me cheat, that's not okay." She shoved down again, and I was fully buried inside my Mom. "So fucking big. You can't be that big, you're not allowed to be that fucking big." She was breathing so fast, hyperventilating almost. Her eyes were flickering side to side. "Oh fuck. I'm so fucking close."

Another pothole. The back of the van dipped, Mom popped off my cock completely and slammed right back down.

Thank God I stayed lined up. Holy shit that could've been bad.

Instead I slammed right back inside her, slamming into her depths like a freight train. I've had some experience with bruising cervixes in my life, that was going to hurt her later. But, in the moment, it can apparently feel amazing.

"UNNGGGHHHHHH! AAAHHHHH FUUUUCCCKK!" Mom screamed as her pussy squeezed and pulsated on me as hard as Tori's ass had earlier. I gritted my teeth and breathed, so worked up, so close, but not willing to cum inside her. Mom stayed put and her hand reached down, mid orgasm, and strummed her clit. "Guhhhhhhhhggghhhh!" She moaned deeply, no longer a scream, and pussy juice poured out of her in a thick stream. She rocked just a little, grinding me against the opening to her womb, which I was struggling to not fill up right now.

Her bandana was all fucked up, her jaw length black hair falling down. Mom's eyes were staring deep into mine as she stroked her clit and came.

I could just thrust. A handful of thrusts and I would fire my cum into the pussy that made me. She wouldn't resist me AT ALL if I did. This was all on me. I settled for a single flex of my cock, as she was coming down, and it earned another moan, extending her orgasm a few more seconds. Finally, like a puppet with its strings cut, she relaxed against me.

Mom lay against my chest, breathing quietly. Maybe asleep?

'All good up there?' I messaged Liv.

'Dad heard her scream. I told him Mom bumped her head from the pothole. He's finding a place to pull over.'

She followed up with 'You're an asshole.'

Ugh. That would suck soon.

Tori was shaking Mom, "Hey, you need to get dressed. Dad's gonna pull over."

Mom ultimately was only able to get her panties on before the van stopped and the back doors opened. The overalls were defeating her tired mind.

"Miranda? Uh, where are your clothes?" Dad asked after he set the drum down, creating the path out of the trunk space. He sniffed, distinct smells pouring from the backseat.

"Too, uh, hot," she replied, clambering over the seat, followed by Tori and then me. We were at a rest stop, which was nice. I needed to pee. Mom hid behind Dad and got dressed, while Dad just looked baffled.

"Yeah, it gets pretty warm back here," Tori covered for Mom. I grunted, unable to meet Dad's eye.

Standing by and letting it happen is literally as bad as being an active participant. I was not innocent here.

We stretched our legs, and I wandered off to the bathroom. Dad followed. Oh no.

He talks to people at urinals.

"So, you doing okay with the girls on your lap, Orrin?"

I breathed, trying to relax enough to pee. My near-orgasm had faded, but it was really difficult to pee with an erection. "Fine, Dad. They don't weigh much, any of them. I could carry them around and hardly notice."

He laughed, and I could hear him peeing, "Yeah, that's probably true, as big as you are. They probably would've conscripted you for the football team if your mom hadn't homeschooled you." He cleared his throat. "Speaking of your Mom, was she in your lap, like that? In her underwear?"

I sighed, finished peeing, and used the time spent flushing to think through my answer. My erection finally started deflating. "Not for very long," I replied truthfully. Most of the time, she had had them off. I felt like a monster.

He clearly interpreted it the other way, "Oh good, so mostly Tori then. Hey, maybe we should put you up front? Let the girls have the backseat?"

Liv would murder me if I let that happen. "I don't fit in the front with all the instruments right behind the seat. It's pushed too far forward. Sorry I'm so tall, Dad." I shrugged. "If you're weirded out, I'll tell Mom to sit back up front with you."

"Right, cuz it makes total sense for two girls barely in their twenties to sit on a teenager's lap." He pinched the bridge of his nose, then set to washing his hands.

"You think we're going to do something inappropriate?"

"You're hormonal. So yeah, I think it's a risk to watch out for over the next four hours. Just... don't let them get to you, son. Having them that close has to be... hard." I was very grateful I was soft by now, tucked in my shorts, because he glanced by accident. "Ahem, I know you're strong, way more than me, you'll get through this just fine, I just want us to have a comfortable family at the end of it. Y'know?" He placed his hand on my shoulder, significantly up from his own.

"I'll keep an eye out for shenanigans," I said.

In reality, I had already fucked one of his daughters, in the ass to be specific. I had also made his wife cum on me, without cumming in her, so that was... better? And I very much wanted Liv to ride me fully, I needed to cum so badly and I wanted it to be inside her.

I was so emotionally tangled. We got back to the van, and my mom gave me a happy hug and a significant look before climbing into the passenger seat. My phone jingled immediately.

'That was one of the best orgasms of my life. I get that we don't get to do this again, but I just want my wonderful son to know that he's a fucking rockstar.'

She followed it up with a topless picture, her wonderful little breasts finally exposed for me to see. She was laying back in her bed, looking longingly up at the camera. The timestamp on it suggested it was a few days old, so she had probably sent it to my dad. I quickly locked my phone in case someone saw the picture. Dad was pacing, waiting for everyone to load up so he could put the drum back in.

Nervously, I watched Tori get in, and followed behind her. Liv settled on my lap, and she was tense, her body drawn tight like a bowstring. She didn't look at me. The doors closed behind us.

'I'm sorry, Liv. I didn't mean to leave you out.' I messaged her. She saw it, and frowned at me.

"I'm right here, Orrin. Just fucking talk to me."

'I prefer to speak this way.'

"Tch. Fine."

'Tori said you and her were crushing on me?' That wasn't true, though. But it was a place to start.

She smiled involuntarily, and glanced at her sister. "She did, huh?"

Tori smiled back, watching half the conversation, not knowing what I had said.

'Kinda. Is it true?'

"No. It's not true," Liv replied. I met her eyes and my stomach sank. "We've talked about it often enough, she knows how I feel. We're both in love with you, Orrin," she finished quietly, placing her hand on my chest, the coldness melting from her eyes. Tori hugged my arm from my other side. My heart picked back up and was pounding.

'When did that happen?'

"This past year, when you got to college and started texting us all the time. I didn't know that you could be... expressive. You're so NOT that all the time, it was like a window into my little brother. I loved you immediately."

"I wasn't very far behind," Tori said.

I switched over to an existing group chat between the three of us. 'I've loved you both far, far longer.'

They gasped, looking down at their phones and then back to me. They smiled so wide, and I saw little tears in Liv's eyes.

'The problem is that I love Mom, too.'

"Oh. Well that makes sense," Liv said from my lap, sniffling a bit. "We're all so alike and so different. If you were attracted to one of us, it would happen with all of us. I don't know what to do about her, though. I don't wanna ruin Dad."

I nodded, and took a deep breath. "Liv," she gasped again. I had officially lost her challenge. "I'm in love with you." She lit up like a bonfire. I turned to Tori before Liv could properly respond. "Tori. I'm in love with you. It's selfish, but I want you both... to be mine."

All of this was said quietly. We were moving once more, but Dad had refused to turn on the music, finally suspicious after Mom had stumbled out of the van in just her panties and a teeny tiny shirt.

So when the girls mobbed me, pulled me in for happy little kisses, they were as quiet as possible. Liv's lips were so gentle, loving and tender. Tori kissed passionately, and was the first to offer me her tongue. Liv followed right after, and she moaned at the intimate contact.

"You all right back there?" Mom called, probably at Dad's insistence.

Tori broke the current kiss and ducked around to the peep hole. "Never better!"

That was too much. "Seriously? You guys are so suspicious," Dad said from the driver's seat. "Miranda, move the peep hole around if you don't mind, I want to see Orrin and Livvy."

Mom grumbled but did as he asked. This wasn't the first time we had fiddled with the little gap in the bean bag chairs, Dad had done this very thing once before when Mom was sick during a drive, so we knew it could be done. There was no rearview mirror, but he had installed a mirror on the dashboard in order to keep an eye on us. With a few adjustments by my Mom, he was able to keep an eye on me through the one-square-foot hole in the bean bag chairs taking up much of the middle row. It was basically just our faces.

I gave him a look of pure innocence, though his glare wasn't on me, but Olivia. He drove smoothly within the lines, despite fixing her with the most suspicious of stares.

"Tori," Liv muttered, shamelessly looking away from him. "Get the lube?"

"You sure?"

"Mhmm. You did it, I will too. Dad can fucking watch if he cares that much. I'm gonna take my man in my ass and make him cum."

She said it with a quiet ferocity that gave me chills, but still not loud enough for them to hear from up front, over the sounds of the engine.

Slow wiggling followed, with Tori surreptitiously helping both of us out of our bottoms without attracting undue attention.

In a group chat to everyone but Dad, Liv sent:

'He's going in my ass. Some distraction would be nice.'

Mom's response was immediate. 'Done. Gotta bring out the big guns, though.'

I could just barely hear her say, "Vince, you can see back there, can we turn on some music? I have a shitty song stuck in my head."

He chuckled, "What song?"

"I dunno what the actual song is, but I know it's terrible." She then proceeded to sing a piece of 'Terrapin Station' by the Grateful Dead, but in a whiny voice to make it sound bad. It was a low blow. A cheap shot. My Dad was a big Dead Head; he saw red in moments, and there was a bickered argument, and then that--admittedly pretty decent--song was being played at full volume. All 15 minutes of it.

"IT'S A MASTERPIECE!" He bellowed, all worries about incest forgotten.

'Get to the butt sex, kids.' Mom sent to the group chat.

But my cock was already wrapped in a lubey hand from Tori while Liv was obscenely fingering her ass with the stuff, crouching over Tori's legs, out of view of the peep hole. She was whining and whimpering as she did so, and I found it to be an incredible sight. Her ass was maybe a bit bigger than Tori's, and smaller than Mom's, each cheek a lovely handful. I grabbed her ass, squeezed it, and groaned.

Liv giggled, but then took my wrists. "No moving, baby brother. I want what Tori got."

Apparently satisfied, she seated herself sideways in my lap, looking at my cock in trepidation. "Fucking donkey dick," she whispered. She moved so my cock was placed between her thighs, against her pussy. "God, I want it so badly, Orrin. Like, the normal way, but also the extra naughty way. Any way you want me."

She looked me dead in the eyes and raised her hips up, up, up. Took a firm grip of my cock and aimed it at her little pucker, a determined look in her eyes. "One go, big sister," Tori said. "Well, I got him in, and then it was one go right after."

"How was that?" She asked, psyching herself up.

"Best pain ever. Oh my God."

"Fuck yes. Okay. Let's. Fucking. Goooo," she moaned as I penetrated her tight ring. "Hnnngh God he's big. But it feels... nice? Ow, but awesome." I supported her back with my hand, holding some of her weight. She took one big breath, and pushed down firmly. "HhooooOOOOHHHHgghhhh!" Liv gurgled as I penetrated that hole fully, as she lowered herself on me completely in one go, slung sideways across my lap to stay out of view.

She settled herself down on my lap, ass resting on my balls, and leaned her shoulders onto Tori, who was petting her hair with little soothing whispers. Liv's face was a frozen mask, her mouth hanging wide, eyes rolled back, a little breathy sigh constantly pouring out.

To avoid suspicion from the front of the van, I lay my head back against the seat and let my face relax. I didn't express any of the intense pleasure I was feeling, and I didn't thrust, as much as I wanted to. The grip was incredible, the scalding heat of her tiny ass was so impressive. My cock flexed involuntarily, and Liv made a sound somewhere between a hiss and a moan before Tori clamped her hand over the blonde's mouth.

"Kiss me, Tori," Liv said. Tori grinned, their lips locked hungrily, and Liv slowly relaxed a bit on my cock. They made out for several minutes, and I was surprised to find that Liv was the aggressive kisser there. Was that a distraction from the cock buried in her ass, or was Tori submissive to her big sister?

Was this their first time kissing? I let my curiosity shine through in my eyes, and Liv picked up on it. "No, we haven't done this before. Maybe a little light flirting," she said, after breaking the kiss. She began to rock her hips a bit, an inch at a time moving in and out of her asshole, her rectum squeezing me every few seconds. "I just thought it would be fun, since we're probably gonna be doing this a lot."

She flexed her core and raised up halfway before lowering back down, fucking my cock with her ass. Liv repeated this motion several times, and her face showed mostly pleasure by now. She moaned quietly, constantly, unable to help the sound, but it was masked by the music. Tori smiled at me as I watched Liv go, and the redhead's fingers crept down to seize the hem of Liv's shirt. Slowly, she pulled it up until the bottoms of those breasts were visible. With a flick, Tori pulled the shirt up all the way, and Liv's little b-cups jiggled free.

Liv was riding me faster by now, and Tori began to pinch and pull at her little pink nipples, the first breasts I'd seen of any of these women, at least in person. "Haaahhh!" Liv whined, bracing herself on her arms on the seat cushion. She stopped each thrust just shy of full depth to prevent an impact, otherwise the backseat would be ringing with a repetitive slapping sound. She took my cock in its entirety on each thrust, just like Tori had. They were both amazing, and I tried to silently convey that to them.

I would show them my actual feelings at the next possible opportunity. Right now I was a brotherly butt dildo, stationary and fuckable.

Her ass was amazing, wonderful, so fucking tight, and I was getting close. But I wanted her to cum first. So I flexed my cock as she lowered herself down, again and again, and that little extra bit made her squeak with pleasure. Little cummy noises could be heard from my big sister, and her eyes opened wide, her orgasm approaching fast.

The song ended. "Orrin, where's Livvy?" Dad asked, eyes tight with suspicion, looking at me through the mirror.

"Laying on Tori trying to rest," I grunted the lie as Liv's breath came in gasps.

"Well then you can send your mom a picture of her laying all restful and calm, huh? Just to verify?"

Liv was so close; she couldn't be bothered to cover herself right now. Tori's hand was crammed between her sister's legs, working her clit. I hadn't noticed that. Liv would cum at any moment.

I looked at my Dad, "No. Trust me or don't."

I leaned my head back and didn't look at him, taking hold of Liv's hips and giving her a single, solid thrust. She looked at me adoringly and came with a silent howl.

Liv was already silencing herself to the barest of scratchy screams, and Tori clamped her hand over her sister's mouth to silence even that, while Tori's other hand worked to drive Liv even higher. I was thrusting a little more freely, trying to not make it obvious in the mirror what I was doing. That mostly meant my head had to stay still and I couldn't gasp due to how fucking incredible it felt.

Thankfully, I'd had a lot of practice at not reacting to stuff today.

I gently hammered Liv's asshole with my cock, letting her lay back and silently cum. Her eyes were open wide, staring at the roof of the van, sightless as her body arched in delightful agony. My lap was once again quite wet, as juices gushed from her pussy, poured onto me. Remembering Tori's reaction to the pothole at this point in her orgasm, I raised Liv up and slammed her back down one time, heedless of the meaty slapping sound. The extra roughness and the tiny bit more depth turned the gush of girlcum into a squirt against the van wall.

She looked at me in wonder, baffled, almost a look of worship. I smiled at her and finally came. After all the teasing from my mom, over an hour of it, it was going to be a big one.

The first blast of cum in her rectum splashed back on my cock and it felt cool in comparison to the insane heat of her ass. I think I did a good job of keeping my face calm as I thrust and came, deep breaths forced out from my nose in place of real moans. I hazarded a look at my Dad, he was watching the road. Back to Liv, she had blacked out. Tori was grinning at me through a curtain of her red hair, holding onto her big sister as she squirmed, still cumming even while unconscious.

Each lance of white hot bliss came with an involuntary thrust, deep in my sister's asshole. I was struggling not to grunt, to make the Neanderthal sounds the girls liked so much. No, I just silently came inside my silently cumming sister. I put enough cum in my oldest sister's ass to rival what I had done to Tori before, with the two week buildup. I had a feeling I wouldn't be having any more of those going forward.

Liv had come back around only a few seconds after she blacked out, a little disheveled but her orgasm had mostly ended by the time she came to. As I finished, she just caressed my chest with a smile, all of this out of view from the front.

At some point, I became aware of the fact that Mom was talking animatedly to Dad about something. A concert? A distraction to let me cum, probably arranged by Tori. I sighed as I finally came down fully, my body relaxing and my cock beginning to soften. Liv leaned up to hug me, and then pulled me to the side, out of view, to kiss me passionately.

"Hardest I've ever cum. Holy fuck," she whispered. "That one big thrust sent me to the moon, and THEN you started to cum. Oh my God I love you Orrin."

I hummed and just kissed her in return, but I needed to pull out of her. It was uncomfortable in this position as my cock had nowhere to go as it softened. "Cleanup time. Mom had towels."

"No way, I get to clean up this time!" Tori said quietly.

I was treated to quite the sight, as Liv moved off me and leaned over the pile of luggage on the damaged seat, allowing Tori to just dive in between her cheeks, cleaning my cum from her ass. Her hole was gaping open lewdly, and Tori just got right in there. When she was done, the faux-redhead turned to me with a naughty smile and bent her head into my lap. I had halfway hardened from the scene before me, so when she took me in her mouth I hardened the rest of the way. So fucking hot. But I wasn't going to cum again anytime soon.

Finally clean, she pulled my shorts up, and I felt the most intense wave of sleepiness overcome me. I pulled Tori into my lap and Liv took her spot, and I squashed both of them into me as best I could. "Comfy?" I asked, and they both nodded.

I could never sleep in the van, but that apparently didn't apply to today. There was nothing normal about today. I fell asleep.

***

It was night when I awoke to the feeling of the van stopping. The girls had made themselves presentable before our nap, and I was fine in just my shorts and shirt. Nothing left to do but see if my Dad suspected things. Suspected I had butt fucked both his daughters, and kinda maybe a little bit fucked Mom. Or let her fuck me and cum on me.

I felt bad about that one. I couldn't bring myself to feel bad about Tori and Liv, but Mom? I needed to talk to her.

Dad opened the door and pulled the drum, allowing the girls to get out first. I squirmed out after them. He was a little tense, but just sighed. He looked at the three of us, and the girls blushed. "Y'all are adults. Whatever, y'know? Nevermind."

He walked away, towards the line of cabins. Right. We were here to provide them with instruments. It was our whole thing. I began to unload, and the girls left me to it, as it was my job. They were here as instructors, mostly, Tori, Liv, and Dad were the musicians of the family. Mom and I couldn't carry a tune in a bucket, though I could teach kids just fine.

Mom came and helped, a rarity, and I made eye contact. "You have to tell him about what happened in the back," I said. "Least with me and you. He suspects me and the girls."

Mom nodded, "Yeah. I do. That went way too far, but at least you didn't cum." She grimaced.

"Riiiight. That's totally better. What will you do?"

"Offer him Deidre, probably. That powder keg has just been waiting for a spark, so it's fine. I've mostly just been teasing him with it at this point, I want it as badly as they both do."

I groaned at the image of my mom and the leggy blonde we called Aunt Deidre together. They weren't actually sisters, but had grown up together. Mom wandered off.

I soon had the van unloaded onto the staging blanket I had set out for this purpose, following the steps Dad had outlined a hundred summer camps ago. "Looks good, son," Dad said, having appeared behind me at some point. I grunted, nodding at the praise. He sighed. "Orrin, did... stuff happen?"

I nodded.

"With your Mom?" He grimaced.

Nuh uh. Not my landmine to walk on. "That's for you to talk about with her. I'll answer your questions after you've talked to her."

He nodded slowly. "They have only one cabin for us this time, three twin beds. I'm probably gonna take your mom to a B&B nearby, and she bought tickets to a really well known Jimi Hendrix tribute thing for tomorrow, so you might not be seeing much of us. You three gonna be okay here, by yourselves?" He gave me a significant look.

"We'll be fine. Uh, safe," I promised him.

He relaxed, his primary concern apparently appeased. I was aware enough not to knock up his daughters. "Cool. Glad I raised at least one sane person."

I frowned, "How am I...?" I couldn't finish.

He chuckled, patting me on the back, "Three pretty women in your lap, and all three of them seemed interested. Trust me, son, if I were in your shoes that backseat would've been a very loud place. No matter what you all did, I would've done far more."

I had my doubts, but I let it go.

"Alright, let's load up the gorilla!" He said loudly, with a big laugh, and I groaned. It was a ritual at these camps. My sisters and Mom all giggled, grabbing various bags, almost all duffel bags, with two rolly luggages. One by one by one the bags were slung across me, the crossbody straps digging in, and the rolly luggages were placed in my hands. Only my parents' two bags were left in the van.

I looked at the long line of cabins, "Which one is ours?"

"The one at the veeeerry end," Dad said, clapping me on the back with a grin that made me feel better.

"Sonuvabitch!" I probably deserved it.

Six bags attached to me and two luggages in hand, I stomped my way over while Dad began to move the instruments to their final location. The girls followed me, holding hands.

"Y'know, Orrin, Tori isn't on the pill, but I am," Liv said.

"So you can fuck us both and then fill her up, at least until my pill kicks back in, in a few days." Tori said. "We have the whole cabin to ourselves."

I grinned at them, even under the strain of the heavy bags. "Fuck. Yes."

We got to the cabin, and it was unlocked. We stumbled in and locked it behind us. The girls stood by me and slowly pulled the straps off my shoulders, and they didn't stop once the bags were gone, Tori pulling my shirt off and Liv pulling my shorts down. A girl wrapped herself around me, kissing me, I'm not sure who, and I heard the shower start.

Oh nice, showers were built into the bathrooms in these cabins. Amenities varied in these places, I was happy to get the full package deal.

Tori was the one I was kissing, I realized. I carried her into the spray, and she shrieked. "I'm still wearing clothes!" So I stripped her. Soaped her quickly. My other sister joined me, pressing close, warm and naked. Soapy hands on my cock made me clean, while tongues on my nipples made me horny. I groaned and kissed them one after the other, and groaned again as they kissed each other.

No time to clean hair. Just the most basic of body showers, a towel pat down, and a brief pause to shove the twin beds together, and I was falling into bed with my sisters. Tori seemed to want to straddle me, but fuck that. I'd been ridden all day.

I rolled her onto her back and mounted her. She spread her legs for me and I wasted no time penetrating her silken depths. I kissed her as I slid my cock inside her, her pussy squeezing me with a heat that rivaled her ass earlier. "I love you, Tori," I reiterated, and she beamed at me.

I was able to reach full depth in a minute or so, and she moaned loudly. "Tori, you mind if I...?" Liv asked. Tori grinned and nodded, allowing Liv to mount her face, facing me. Liv moaned immediately, and Tori did too as I drove myself into her depths.

I delighted in their naked bodies, even as I fucked Tori. I hadn't had a chance to see her breasts now, but they were so similar to Liv's, perky little b-cups, though Tori's were more cone shaped and her nipples were longer. I watched them jiggle as I thrust into her.

Liv looked to be enjoying herself, but I wondered if she could cum, crouching on her sister's face like that. Her hips were rocking, but that was it. "Lay down, Liv," I ordered. I soon had Tori on all fours, licking and fingering her sister while I fucked her from behind.

"Oh that's better! Ohh baby sister, your tongue is amazing!" Liv cried. I wrapped my hands around Tori's waist, and slapping sounds rang out as I pounded into the petite woman.

"Ahhh," she moaned into Liv's pussy. "Sssooo goooodddd." I ground on her depths, a slow, circular motion, a gentle kiss against her cervix, and that set her off. "Mmmfffuuuuccckk!" She moaned, and Liv pulled her head in right to her pussy. She licked and came at the same time.

Liv seemed to be teetering on the edge of orgasm, but I wasn't going to help her. I wanted to feel her cum on my cock as I entered her pussy for the first time. Instead, I flipped Tori over on her back, reentered her, and pulled her up into my lap, driving deep. It extended her orgasm, and she looked into my eyes, red hair matted to her face in places.

"So. Good. Orrin. God I want your cuuuum. You won't, though, will you?" She was gasping and rocking in my lap.

I shook my head. "Not till you're safe. I'm not about to be a dad."

"Unghhh!" She moaned suddenly. "You'd be so good at it! My baby brother will be an amazing Daddy to my lil babies."

I grunted, surprised at how hot that was. "Not. Today."

Tori giggled, leaning down to bite my shoulder. "Fair enough." She panted, clinging onto me and finally relaxing. "Unghhh I think I'm good for now, though. Go show Livvy how much you love her."

Tori climbed out of my lap, and bent down to lick me clean. I grabbed a hold of her hair to prevent it from going any further. I was already getting close. But when Liv joined in at the other side of my cock, I was helpless to resist. They alternated sucking and licking and kissing each other, and I was soon panting, shoving my cock as deep in their mouths as they could take it.

"Liv, if you want more than one thrust, you'd better stop now."

The little blonde looked up at me with a mouthful of cock. She pulled back with a sigh. "Fair enough. I got lost in the sauce there."

"No, the sauce goes in your pussy," Tori said with a grin. "And then I'm gonna eat it all."

Liv smiled at her, smoldered at her really, and lay back with her legs spread. I was once again stunned at her beauty, the wonderful view of one of my gorgeous sisters opening herself up for me, looking at me with love in her eyes. "Come fill me up, Orrin."

I recalled that she had been on the verge of orgasm before Tori lost the ability to eat her pussy further. Well, I could fill in.

"Aah! Orrin!" Liv yelped as I leaned down to lick her pussy. She tested amazing, like berries and horniness. Tangy, sweet, and musky. I feasted with every bit of skill that I had built up from my time being a bit of a man slut, and she responded with a satisfying shriek. "Holy fuck he's good at that!" I would normally add fingers at this point, but I was just getting her close. I spread her lips with my fingers and licked her clit mercilessly. "Oh God little brother, I'm gonna cum. Oh fuck, oh God just like that. Stay right there, oh fuck."

With a grin, I disobeyed. She whimpered when I removed my fingers, but her eyes widened when I moved over her. "I need to cum, too."

Panting, almost frantic, she wrapped her legs around me, "So then cum, little brother! Let me cum on that dick while you fill me up!"

Liv gasped when my cock penetrated her, and her back slowly arched as I fed inch after inch into her pussy in one slow stroke. I bottomed out in her, and the tension was released in one long, low moan. "Oooooohhhhhhhhh fffuuuuuuucccckkkk yeeeesssssss unghhhhh."

Tori was a sexpot, she had loved it when I took her hard. Liv was tender, and I loved her tenderly. Her hand was on my cheek, staring into my eyes as she quietly came in breathy gasps. I moved with her, told her I loved her, and in less than a minute, I came inside her.

As it was my third of the day, after taking both sisters' butts, it shouldn't have been as intense. But this one was a slow burn, scorching me from my bone marrow outwards, I felt like I was burning alive as I came inside my beloved big sister. Her limbs were wrapped around me, and she was no longer quiet, moaning loudly at the ceiling as I filled her womb.

This is where I belonged. Inside these two wonderful women, and I would have them as long as they would let me. I locked lips with Liv, caressing her tongue with mine, and came. And came. And came. I came enough for both of them, which was convenient, as Tori wanted to eat it.

Finally, gasping, I collapsed on her. Liv had cum mostly the whole time, though she had come down before me. She held me, arms around my back and legs around my hips, holding me there, squashing her.

Finally, I moved off her, and Tori moved in for her snack. Liv came again, and then Tori lay back and let Liv go down on her. I was slowly getting hard again when they collapsed in a sweaty pile, and I decided I was too tired to continue. They insisted on putting me in the middle of the cuddle pile, snuggling up to my chest from either side.

After a round of kisses and declarations of love, we fell asleep.

***

My mom's message came in the middle of the night. I was overheated, so I had extricated myself from the pile of sleeping girls. I was washing my face in the bathroom when I saw the message.

'Hey, Orrin. So, interesting development. Dad was... aroused, when I told him what we did in the backseat. So, in exchange for my permission with him and Deidre, I get occasional permission... with you.'

She immediately followed up with:

'If you'll have me.'

I suppressed a happy laugh, excited at the idea.

'Fuck yes. How much cum is leaking out of you right now?' I asked her.

'So. Fucking. Much. Oh my God.'

She followed up with a picture of her pussy, extraordinarily leaky, in an unfamiliar hotel room.

'Dad passed right the fuck out.' She added.

'So. Important question. You said you're a fan of anal, you brought lube on this trip...' My heart was pounding as I sent that reply.

She followed up with a picture of her ass leaking just a little cum.

'Yup. I had to, after watching you with Tori. It was the first hole he took tonight.'

'How do you feel about getting DP'ed by me and Dad?'

Long pause. So long.

'Holy fuck. Sorry, had to cum. Yes. I want my men to fuck me together. I'll tell you when I get him on board, you get your sisters to approve.'

'Fuck yes.' I replied.

A huge grin on my face, finally cooled down, I went to the girls, who were still asleep in bed. I was definitely too horny to sleep, but that was just fine.

Liv was laying on her belly, and I woke her up with my tongue in her ass, driving two fingers inside her. Her orgasm woke Tori, and their moans soon filled the cabin once more. Once they were good and cummy, I would raise the topic of the DP party.

Until then, I was just going to enjoy myself. Making your sisters cum is pretty awesome, after all.