Day Two in my Sister's Body Pt. 02

It's just a warm day that's all I'm feeling... maybe some denial will slow the process. Walking into the gym it feels like all eyes are on my rock hard nipples even though that couldn't be true. Maybe not all eyes but as I tap Kim's access card at the door I can see the male receptionist in the reflection of the window staring at my ass which elicits a little flutter, he is sort of cute and my first reaction is to give a little wiggle but that's the kind of reaction I'm trying to keep at bay, head down straight to the machines then home stick to the plan.

Speaking of plan, Kim gave me a vague workout plan before leaving that consisted of treadmill cardio, some bench lifts and then finish with yoga stretching. I wasn't much for yoga in my own body but running is easy and lifting is my go-to.

Treadmill first then. The gym has a few but I'm taking one far down near the wall away from the few others around the gym, if I can keep to myself that should go a long way to avoiding any urges. It seems another girl had the same idea to move away from the crowds, probably to stop guys staring or bothering them. I got set up on a treadmill behind her, l put in my earbuds and just started running.

One of the problems I've always had with treadmill running is it's boring. Straight track, you're not passing any interesting view, you're just left with your thoughts and what's in front of you. In my case I had a great view of that girls rear.

She was a very long haired brunette who had it tied up high, the ends of which swished back and forth along her back like a tail. She was wearing black yoga pants and a grey crop top that started high up her back, leaving her lower back exposed which was glistening with sweat. Like a phantom limb I could feel my non-existent dick hardening at the sight and have to literally shake my head to clear the thoughts.

As I did I spotted a guy out of the corner of my eye slowly making his way down the aisle of treadmills. He was holding his phone out and seemed to be taking pictures or video of the girl in front. My mouth fell open and he noticed and caught my eye with a conspiratory wink.

He must have been about six foot two or three, bald on top with a stubble beard, very Jason Statham looking. He was wearing a tank top and shorts with the gym logo on them which exposed rippling muscled arms and thick beefy legs. As my eyes continued down I can see the outline of a pretty lengthy penis bouncing against his leg, from here it looked like he must be 6 inches soft, his short shorts threatening to expose him if they got caught or pulled up even slightly, the idea of it was starting to make my mouth water.

I must have been staring too long because when I looked back up his eyes were locked on mine and he was grinning. My face turned a shade redder and I turned to focus back in front but the image of his cock silhouette on the shorts was burned into my mind's eye.

He made his way down to the girl in front and said a few things I couldn't really hear over my earbuds and the noise of the treadmill but whatever it was she seemed pissed about it, she slammed the emergency stop button and started stomping away to the other side of the gym as the trainer held his arms up in mock surrender with a large smile on his face, actually bending lower to get a closer look at her ass as she passed. He turned and made his way over to my treadmill and had the audacity to reach over and pull out my earbuds, popping them in his own pocket.

"I guess she didn't want help with her form, I hope that didn't make you jealous Kim you know you're still my favourite. Tell me you've changed your mind and you'll let me take you out."

He grinned down on me with a confidence only this type of guy has and I've known a lot of them from the other side, between football teammates and frat brothers you get to see it in action a lot. They overconfidently borderline harass women and ninety nine times out of a hundred strike out but the one in a hundred that go for it just seem to fuel them. I'm guessing this guy comes to bother Kim when she's in the gym and she turns him down but she's never been the mean type, she hates upsetting people so I can imagine she hasn't shut it down hard enough to deter him.

"No thanks Chet, not interested" I said, pulling his name from his badge.

"I could make you feel so good though" he returned, licking his lips.

His eyes locked in my chest rather than my face. Way he leered, not caring that I saw was making me feel so hot. I saw a little twitch in his shorts and had to get away before I did something Kim would regret.

"Sorry, I'm finished here" I said quickly hitting the stop button and stepping down from the treadmill. "My earbuds?" I asked, holding out my hand.

"You know the deal, you've got to reach in and get them yourself."

He was grinning wide, widening his stance and turning to give me access to his pockets.

He can't be serious, is Kim so timid she won't tell him to fuck off? But my mouth was already watering at the idea and I could feel another wet spot growing, I need to just deal with it and get out. I reached into his right pocket and felt around, my hand definitely bumping off one of his balls but otherwise the pocket was empty.

"Oops I must have put them in the other pocket." he grinned his douchebag grin down at me.

No doubt about it he was enjoying this, from his clearly hardening cock outline a lot too.

I sighed and reached into the left pocket. As my hand went in I could immediately feel the hot flesh of my cock in my palm, this motherfucker had cut a hole in his pocket and was going commando to get girls to feel his dick! As soon as I had a handful I tried to pull away but he quickly grabbed my wrist.

"They're definitely in there just have a feel around" he said as he took my hand in his and started using it to stroke himself.

It was much, much more than a handful. He slid my hand up and down its length slowly as it started to get harder, stiffening and if possible growing even longer. The heat coming from his cock felt like it would burn my hand and I could literally feel some drool running from the corner of my mouth down to my chin.

At some point he had taken his hand away but I didn't know when or how long I had been jerking his cock of my own power but I looked up and he was staring down at me with a mix of slight shock and total victory. That shook me back to my senses, I snatched my hand away so fast it slightly exposed his penis head through the leg of his shorts and he had to jump a bit to hide himself again. When he had readjusted himself he turned and dropped the earbuds from his hand directly down my top between my tits.

"Sorry I guess I had them all along, thanks Kim, now I know where to go when I need a hand." My face flushed and I took off towards the weight area, my hand down my top searching for the buds and feeling Chet's eyes burning a hole in my pants.

It's rare to see the weights area of a gym empty but I guess it's still early in the day midweek and most people are at work which is lucky for me because I needed some time to fix my head and reset.

My pussy was burning and I could feel a sweat forming between my tits that wasn't from the running so I went straight for the water fountain and after tying up my hair splashed my face. The cold feeling instantly soothed and my cheeks finally started to cool. I splashed again for good measure but this time mostly missed my face and half the water ended up down my white sports bra top. The cold sensation on my nipples had the opposite of a cooling effect, feeling like they were being teased with ice cubes and instead of reducing the horny feeling it only exasperated it.

In frustration I walked over to the bench press, my favourite workout in my own body, and decided lifting something very heavy would do the trick. I caught a glimpse of Chet moving around the gym and the image of his cock flashed back into my mind in an instant. Shaking the image out, I checked the rack and someone had left weights on the bar already. Awful gym etiquette but at least it meant I could get started right away. I realised I don't know what weight Kim reps but eyeing the weights on the bar it seems like maybe the last user was only warming up, looks do-able.

I lay down on the bench under the bar which seems further away when your arms aren't as long and started to get set, I look down and notice the water from the fountain has left my white sports top slightly see through, the shape of my tits much easier to make out as if silhouetted behind a curtain with the light shining behind. At the same time I gripped the bar and prepared to let it down when the warm hard feeling against my palm reminded me of minutes ago when it was wrapped around Chet's massive cock, so vivid in my mind it's as if I can feel the veins on the bar.

I've never lifted so distracted in my life and as soon as I let the bar down I realised I way overestimated Kim's arm strength. The bar came down quicker than I expected and landed against my shoulders hard nearly knocking the wind out of me. I was just about able to keep it from rolling up to my neck but if I tried to slip it down my body my tits were bouncing it back. It felt like I was struggling for an age but it was likely only a few seconds before I saw Chet standing over my head lifting the bar back onto the rack.

"You might have a banging body but that's way too much weight Kimmy, are you ok?" Chet said as he easily re-racked the weight and looked down over me.

I was breathing hard trying to get air back into my lungs, my chest heaving in my partly see-through top that Chet had clearly noticed.

"Slow down, deep breaths, let me help."

He put one large hand into my chest, his fingers creeping down slightly into my cleavage and tried to guide my chest up and down slower. His proximity to my nipples had them screaming to be touched but my eyes were more focused on what was snaking out between his legs. He was standing with legs on either side of my head, slightly crouched to get his hand on my chest so only inches above my head through the leg of his short shorts I could see his cock head peering out.

The idea that I only had to raise my head a few inches or pull him down slightly to get a taste of it filled my thoughts, my breathing getting even more ragged than before as flashes of me pulling him down on top of me into a sixty-nine position, grinding my pussy into his mouth as I had the perfect angle to take his full length flooded my mind.

"Seriously are you alright babe?"

Chet's voice broke through and snapped me out of it, I realised I had snaked a hand onto his leg close to his crotch for support and jumped upright.

"I'm fine I'm fine" I breathed, "my shoulders might be a bit sore tomorrow where the bar landed on them."

"Come with me into the office, I'm also a physio so I'm licensed to make your body feel better." he smirked. "Besides I need to write up the incident or my boss will get mad."

He helped me up under the arms, his fingers brushing the sides of my breasts and led me into a small office on the far side of the gym where he sat me down on an low backed chair and moved behind to start rubbing my shoulders. My shoulders didn't actually hurt that bad but his touch felt amazing and I still had a deep need to be filled. He clearly knew what he was doing, though a lot of these type of guys learn how to massage just to get their hands on girls.

Still as he worked his fingers against my neck and over my collarbone I started to melt into him and as I did could feel his bulge against the back of my head. He seemed to be rubbing himself slightly against me because I could feel him growing again as his hands moved further down my front in a way that felt so good a little moan escaped my lips. It was embarrassing and I left my eyes closed but I could imagine his cocky grin looking down over me, maybe licking his lips as he stares down at my chest. Suddenly he grabbed the straps of my top and pulled them down far enough that my nipples almost escaped.

"What are you doing?" I asked but it came out less harsh than I'd planned.

"Don't worry babe I just need these out of the way to make you feel good."

I could hear the smirk in his voice as his hands started applying pressure again along my front, his fingers squeezing the top of my chest.

"Oh. Ohhhhhhh."

He was being slow about it but I knew he was working his way towards his goal and any semblance of control had left me entirely, I leaned my head back and to the side sighing giving him a much clearer view and could feel his hard cock against my cheek.

We both made our moves at almost the same moment, I turned and opened my mouth extending my tongue to lick along his shaft from outside his shorts as he pushed my top down the rest of the way, freeing my tits which he grabbed in his huge palms keeping up the massaging motion.

"You've been a naughty little slut haven't you babe." he said motioning to the bite mark on my tits.

He was alternating between gentle circular motions of my areolas and pinching and playing with my nipples.

"I had you wrong Kimmy I thought you were a good little girl."

I was able to get my mouth around his cock head through his shorts but it wasn't enough, I reached for his waistband and whipped his shorts down around his ankles.

I was right about him going commando, as soon as his cock sprang free from his shorts it slapped me in the cheek and I got a full look. It could have been 8 inches now rock hard, the longest I've ever seen outside of porn, not nearly as thick as Mike's but definitely longer, I sucked the tip into my mouth and started running my tongue under the head.

"Desperate is a good look on you babe, I can't believe you've been so coy with me all this time. Maybe my demure little princess just needed to be treated like a little slut."

A loud slap echoed the room and I dropped his cock out of my mouth in a gasp of pain, he had slapped my bruised tit and after the initial shock the pain actually started to feel a little nice.

"Don't you dare stop" he said as the joking tone left his voice.

He used one hand to stuff his cock back inside my mouth and the other hit me with another gentler smack. That one actually felt nicer but I don't want to give Kim her body back black and blue so I grabbed his hips and moved him fully in front of me now and at a better angle to take him deeper.

"Isn't it better when you stop saying no to me and give in to your nature?"

I tried to nod but before I could he grabbed me by the ponytail and forced his cock deeper. I wasn't expecting the force and gagged on it, suppressing a feeling of throwing up as he held his cock deep inside my mouth. I still had a few inches to go and he didn't seem to be letting up, forcing air in through my nose I did my best to relax my throat bit by bit and slowly he pushed in deeper.

"Stop struggling, relax and let it happen."

It was all too much, one hand on his thigh I brought the other down and finally started rubbing my throbbing clit through my shorts. The slight relief helped and I was able to relax enough to take him to the hilt, my nose against his pubes filling with the smell of his sweat.

"I hope your pussy is this tight" he grunted as he pulled out and pushed back in slowly fucking my throat.

It got easier as he thrusted and I could feel that my shorts were soaked through, when suddenly he pulled my ponytail tight slamming his cock to the hilt and with his other hand pinched my nose closed. My eyes shot open in panic, I couldn't breathe and had no leverage to pull myself away. Both my hands shot to his thighs and pushed and slapped but he wouldn't budge.

"Don't struggle and we can both enjoy it." His voice had gotten deep, his tone darker.

Stars were starting to form in my vision and after what felt like an eternity he finally released me. He pulled his cock out so fast that spit and drool followed, pouring out onto my tits as I gasped for breath.

"You need more practice but it will do, I'll book you in for more one on one sessions" he laughed as I fell backwards into the chair.

He grabbed my tits in both hands using my own spit as lube to start rubbing his dick between them as I tried to catch my breath. So far he had been using my body for his own pleasure and nothing was being done to quench the desperate burning inside me, as soon as I caught my breath I shoved him back against the desk, tearing the shorts from my body and nearly leaping into his lap.

"Fuck me. Now" I demanded, latching onto his mouth like I was dying of thirst in a desert.

He didn't need any convincing and easily picked me up in one strong arm while using the other to sweep papers off the desk and threw me down on top of it. I was so wet his cock couldn't have slid more easily inside. He wasn't gentle and thrust most of the way in one go which hurt initially, it wasn't the same full feeling as Mike's thick cock but he was able to reach much deeper.

He started pumping harder and the initial pain turned to ecstasy, his wild thrusting forcing me to take both my tits in my hands to keep them from bouncing wildly as he grunted animalistically, sweat starting to drip down his head. My own moans escaped more freely and it briefly occurred to me that someone could hear us.

Maybe they walk in and catch us in the act, I wouldn't be able to stop so maybe they could join in, take turns on me until I was completely ravished. The thoughts rocketed me towards orgasm, I could feel the now more familiar waves of it building quickly. I could also feel the familiar throbbing of Chet's cock, his ragged breathing getting faster, his thrusting getting more desperate.

"Don't cum yet I'm so close, don't you dare!" I gasped, my hands grabbing at his chest and neck pleading him on, rushing to my clit to try speed up the process but it was no good.

Chet slammed into me with such force once, twice, three times, his voice raising into nearly a roar as he pulled his cock free from my pleading pussy the instant ropes of cum shot from his cock head up my naked body, his hand rapidly pumping his seed as spurt after spurt launched up over my tits, covering my face, into my hair. The volume was immense and the taste was salty but I was suddenly so angry, so unfulfilled and unsatisfied.

"Hurry up and finish me off you fucking asshole, come on get back in there I need this!" I said as I hooked my legs behind his, pounding my fists against the rock wall of his chest, desperate to force him back inside so I could feel that release.

"No thanks babe I'm good" he panted with a look of pure satisfaction on his face, clearly enjoying the pleading and begging. "Maybe next time" he said with a wink.

He freed himself from my legs and strolled to the other side of the room to grab a bottle of water. All I could do was stare at his back in disbelief.

"Are you serious?" I said.

I jumped up off the table and grabbed his discarded shorts using them to wipe cum from my body.

"Girls like you always come back once you've had a taste, you can't help yourself."

What a dick, what a complete and utter asshole.

I started throwing my clothes back on. I was about to stomp out the door but I noticed his wallet sitting on the desk beside a fucking wedding ring.

While his back was turned I popped it open and took a picture his driver's license, a quick snap of his bare ass as evidence(wifey is about to get some unexpected Instagram DMs) and pocketed a twenty for my trouble. That would pay for a taxi home because I'm not dealing with crowded buses in this state of need. I took off out the door without another word.

"Really looking forward to next time Kimmy great session!" he shouted after me as I took out my phone and booked an uber home.

Thankfully the nearest one was only around the corner, I gave him the address and jumped into the back seat. I put my hoody in my lap and surveyed the damage. My shorts still showed a patch of wetness, I had some cum stains in my sports bra where I hadn't wiped myself down properly and I must have smelled pretty strongly of sex.

The driver was a dark skinned guy, pretty young and I saw him glancing back a few times but despite that, or maybe because of it, I couldn't help but deal with my horny needs and slid my hand into my shorts. It was only a short drive but I couldn't wait, I rubbed my clit rapidly and alternated between that and fucking myself on my fingers. It wasn't subtle and at a stop light I locked eyes with the driver who was staring intently in the rear-view so I moved my hoody over and gave him a show, fucking myself with one hand and bringing the other up to pull a tit free from my top. His eyes were wide with lust and it was only the honking of a horn from behind that snapped him out of it, he had missed the lights change. The feeling of power to hold his attention like that made me giggle and that continued for the five more minutes it took to get to the house.

As soon as we pulled in outside my house I threw the twenty I had stolen from Chet into the drivers lap and leapt from the car. My all-consuming thought now was satisfying the burning desire to orgasm, an entire night with Kim's vibrator and internet porn ahead of me. I turned the key and stepped inside, locked it behind me and walked into the sitting room to find Mike on the couch watching TV in his underwear with a beer in hand. My flustered, frustrated mind wasn't comprehending the situation.

"Oh honey you're home, how was your day?"

Completely nonchalant, like I was his long suffering wife, or more likely by the age difference his daughter, coming home from a hard day at work.

"You look flushed darling and to be honest your outfit is a mess." he said getting up from the couch and strolling casually over to place a kiss on my cheek, the smell of stale sweat and alcohol invading my nose as his hand came to rest on one of my ass cheeks.

I'm stunned by the casualness of it all, frozen in place by just how out of place it all was.

"Mike, what-" "Shh" he placed a finger on my lips silencing me, "I can see it in your eyes, I have an idea what happened to you today, don't worry I'm here to make it all better."

He took his finger from my lips and wrapped it behind my neck pulling me in for a kiss and with his other hand on my ass pressed me against his body. My nearly limp body held up against his by the hand now squeezing my ass cheek, his rapidly stiffening penis pressed into me and his lips moving from my mouth to my neck, the surprising gentleness after a day of being used like a fuck toy it all became too overwhelming.

"It's been had such a hard day, please make me feel better" I said, my eyes beginning to water

I grabbed the hand on my ass and moved it to my pussy making enough room between us for me to start pulling my pants down with one hand and grabbing his cock through his stained underwear with the other. I started jerking off his cock while pushing him backwards onto the couch, as soon as his ass touched down I'd snatched his underwear and jumped into his lap, grinding my pussy into his thick shaft, whipping my top off over my head and shoving his face into my breasts.

His dick already felt prepared and I was desperate to finally cum today, he latched onto one breast again like he had the day before but that wasn't enough anymore I need to be released from this torture. I reached behind and ran my palm along my soaking pussy, ran the juices along his shaft for a few pumps and guided him in. He slid straight in, the beautiful girth giving me the feeling of absolute fullness as I worked my way down his length. As I felt his balls touch my ass signalling that I'd maxed out and a satisfied whimper passed my lips.

A day of clit teasing, creeps and assholes I'm finally getting my reward. Bouncing on his cock with tears starting to stream down my face I pick up the pace and find my rhythm.

"Isn't this what you need baby? You need daddy's cock?".

"Yes baby, the others couldn't make me feel like this, only your cock can make me feel better. Please make me feel better daddy!"

I sounded like girls I'd only ever heard in porn but in the moment it felt so right and it was working, the waves of pleasure were rolling into me and if being his little girl would finally let me finish then that's who I would be.

"Fuck me daddy, yes daddy I'm so close!"

The waves were rushing, every time I heard the slap of thighs on my ass and the feeling of bouncing against his balls the head of his dick was hitting just the right spot.

"Cum for me baby, cum for daddy."

That was all it took to tip me over the edge, a whole day of foreplay and denied orgasm washed away in a tsunami. I kept bouncing through the first few seconds but the feeling was so strong my back stiffened like a board, my legs started vibrating uncontrollably and I nearly feel backwards off Mike's lap.

I'd never felt something so intense, my mind blanked, I could see sparks of stars in my vision as Mike caught me, standing up and setting me back against the base of the couch, jerking his cock over my paralysed body.

It was a complete sensory overload, the pleasure receptors in my head exploding like fireworks.

"I'm so glad I could make you feel better baby, now help me feel better by taking your medicine" he said as his jerking hand picked up pace.

I was only vaguely aware in my haze that his free hand moved to open my mouth and after a few deep grunts the head of his cock fired. If I had the bandwidth to think about it I would say it's surprising that he had this much of a load after yesterday's action, cum came flooding into my mouth with a force that caused it to also spray into my nose, across one eye and covered my face. I must have looked a mess, head covered in ejaculate, blissful smile on my face, head rolled back against the couch fully satisfied.

"Have a nap baby, my treat for being such an obedient little girl" Mike said as he wiped his hands in his tank-top, picked me up and lay me down on the couch.

"I have a little deal to discuss later but for now sleep."

Like yesterday the utter exhaustion after cumming hit me like a brick wall.

"Later sounds nice, goodnight daddy" I yawned, not even trying to fight the tiredness. Later was fine, we can work out the details later, I can get cleaned up later, I can figure out how to deal with Mike later and... sleep came for me.