Mom's Costume Consumes My Mind

~~~ Story Notes ~~~

This one-shot story is an entry in the 2026 Halloween "Costume" Contest.

As I hope you had already noticed, this work of erotic fiction is categorized as Taboo/Incest. As the title implies, the story includes a fairly graphic description of an 18-year-old son and his mother, having sex. All of the standard caveats apply as well.

Thanks for reading!

~~~

I had teamed up with some friends to play games on a Saturday night and I was in the middle of a pretty intense match when Mom and Dad started getting loud.

They weren't having sex or anything - but they might as well have been. Seriously ... my folks are the quietest, most self-controlled people in the world. They're the perfect match. Both of them are firm rule-followers ... to the point that I've gotten into arguments with the two of them now and then about their seeming inability to relax and have fun.

I wasn't sure what had brought on the boisterous verbal back and forth that I was hearing between the two of them but - once they got loud enough that I could hear them over my headphones - I figured that I should pay attention. When I pulled the heavily-padded earpiece off of my right ear to listen in, I couldn't believe what I was hearing. I dialed the volume down on my video game so that I could listen more closely and try to catch up on what I had missed.

Within the next half-hour or so, I had a sketchy outline of what was happening. If the discussion had just lasted that one evening, I wouldn't have gotten enough information to put it all together. However, the conversation spilled over from that first night into the successive evenings. The two of them were more excited than I had ever heard them be about *anything*!

The craziest part of the whole long discussion about their plans was that the two of them were plotting to have sex in public ... sort of.

The impetus, apparently, for this whole rabid discussion had emerged when some upper-level manager at Dad's company started putting together a costume party - an adults-only party. Now normally - as I said - Mom and Dad would probably never even *dream* of going to something like this.

Dad's a spreadsheet geek and Mom's a high school Algebra teacher. I swear that I've probably been forced to listen to more discussions about the numeric precision of - and the computation speed of - any variety of Excel formulas than any high schooler should be exposed to without medication or proper safety equipment!

Anyway ...

This soiree, party, event, shindig ... what-have-you ... was going to be some kind of a big deal. Apparently, the people that Dad worked with had taken what started out as an innocent Halloween party - and they had turned it into some kind of partner-swapping affair - pun very much intended.

Now, my mother and father are far too prudish to trade partners with another couple or - God forbid - share multiple partners. However, apparently the people at work had somehow goaded my father into attending ... which, of course, meant that Mom would be going as well.

Once the two of them had been coerced or pressured into attending this hedonistic gathering, that is when things started truly going off the rails.

My parents don't normally drink - like at all.

Their current topic of discussion, the volume at which they discussed it, and the completely bizarre way that they seemed to be growing less and less inhibited the longer they talked about it - all of those things led me to become worried that they had suddenly started hitting some hidden stash of alcohol that they had secreted away in their room. However - when I took out the trash I actually dug through the bag to look for bottles or cans - but, no, they were doing this sober!

Once the two of them had decided that they were attending this carnal fuck-fest, they had plotted to actually have sex in front of other people!

For Mom and Dad, this would be the equivalent of running naked down the center aisle in the middle of morning worship at church on Sunday.

As the least self-controlled person in the house, I was getting a fucking giggle out of listening to the two of them plot and plan. That first night, I had finally just given up on the game. My friends had been pissed when I'd dropped out but I was playing stupidly from being distracted anyway. I probably actually did them a favor by quitting.

My computer was still on and, technically, I was still in the game. Although, I was just sitting at the lobby screen. I was still wearing my headphones on my head (although with the earpieces off of my ears enough so that I could hear clearly). I was just sitting there, in front of my PC, like a zombie - as I listened to my parents saying the craziest shit that I had ever heard coming out of their mouths.

When either one of them stuck their head around the corner to see if I looked like I was paying attention to them ... I stuck my tongue out of the side of my mouth like Air Jordan - hovering in mid-air before he slam-dunked the ball ... while staring intently at my monitor and repeatedly mashing absolutely no buttons at all on my gamepad. As soon as they stopped monitoring me, I went right back to doing nothing but listening to them.

~~~

Like I said, their plotting and planning went from that first few bits of conversation into a second and third night ... and then continued on. I had never heard my parents get more amped-up about anything in my life! The discussion, obviously, eventually turned to what costumes they would wear to this event.

Now ... as I have already mentioned ... my parents are the most cautious, careful, conservative, clean, circumspect, clinical, ... Mom and Dad are *NOT* pious but - out of all of the people at church - I think the two of them have more right to be than anyone else. They never do *anything* wrong. They also put way more on themselves (and me) than they ever would anyone else.

My parents are so uptight and reserved that, I had never seen my *father* in his underwear - God forbid that I should see my mother in her bra and panties. Even when we went to the beach together, my mother was in a one-piece and a cover-up. Her cover-up was more like a bath robe - not one of those translucent, flimsy things that's thinner than gossamer wings and actually draws your eyes more than turning them aside.

As I have already mentioned, Mom is a teacher. I'm guessing your mind is already going where I'm headed with this ... Let me just speed you on your way.

I think every high school boy lusts for one or more of his teachers. I think most of the girls do as well - but I don't think most of them do anything about it until they get to college. High school boys, at least those at my school, fantasize endlessly about teachers.

Mom takes care of herself. As I said, she and Dad dress and behave conservatively. For most women, I think dressing like a Quaker would reduce the number of interested males. In the case of a high school teacher, however, I think this actually ends up having the opposite effect. Teachers that show some skin have plenty of fans - but those that never show *anything* ... well ... I believe that it drives their secret admirers crazy. I would dare to suggest that it turns them from fans into fanatics.

If you're the only child of a teacher who has a devoted group of young males (and maybe a few females) crushing on them, then you're going to hear comments. Being the kid of two very conservative people, I've been trained from birth to keep an ear out for remarks from others that might let me know when I'm stepping out of bounds in some area. Mom actually even asks me about it now and then - just to reinforce their admonishments and suggestions.

At any rate, take a fit, mature woman, dress her conservatively, and then make her a stickler for rules ... and ... you have the perfect recipe for lots of hormone-addled young men to whisper suggestive things to each other about what they would love to do to that woman.

Did some of them whisper that shit to me to get my reaction? Yes. Did some of them stage-whisper it loudly enough for the whole room to hear - just to see if my mother would react? Yes - but only one or two - and they served their detentions for doing so. Afterwards, they still whispered their innuendos and dirty fantasies - they just did it where she wouldn't hear them directly anymore.

That, of course, almost guaranteed that I heard them - either directly or through someone else telling me what they had heard. Again, that was often just to see how I would respond. Growing up in the home that I grew up in, I mostly just let it roll off of me like water off of a duck's back. Letting it roll off doesn't mean that I didn't process it though.

By my senior year of high school, I had pretty much heard it all.

At the end of September, when I had my 18th birthday, I was probably one of very few males in my school that did not have active fantasies about my mother. I had a few others but - up until I began to hear - more and more often - at louder and louder volumes - my mother and my father talking about having sex in someone else's home - I had not thought about my mother as a sex partner.

~~~

When we turned that corner, however, my body was reacting as if it had been set on fire after being dowsed in kerosene every day for the last week or so ... As soon as the match was struck ... combustion!

Days upon days of the two of them whispering about how they were going to go about this thing - it was like packing more and more gunpowder into a small tube - before adding a fuse and sealing it all with a wax cap - ready for the match.

I've mentioned that Mom and Dad are quiet and careful and conservative. The easiest way to illustrate that for you is to tell you that I've only ever heard them having sex in their room (which, by the way, is the *only* place they have sex) ... I've only heard them going at it when I've gotten up from my game to use the restroom and I actually snuck over to their door and listened closely. Otherwise, you would never even know anything was going on in there. That's how careful they are!

This new version of my parents was a complete shock. In some ways, however, they were still just as self-controlled and stodgy as before. As Mom and Dad discussed ideas for costumes that would let them preserve their identities but still allow them to minimally undress to fuck in front of other people, their anticipation of the party and what would happen there grew and grew. As their excitement grew, it was hard not to be excited as well.

That first night - after my parents started getting loud in the hall ... That was the first time I actually heard my Dad and Mom having sex. I heard every moan. I heard every whimper. I heard the squelching sound of Dad's cock sliding into my mother's sodden pussy. I heard the slapping and smacking sounds of their bodies colliding as Dad - for the first time in my life - called my mother a "filthy hussy".

I am certain that most guys in my school heard the F-bomb repeated all of the time while their parents were fucking. This was the first time that I'd heard anything at all - and Dad might as well have called my mother a cock-sucking whore - it was so shocking!

~~~

That second night, as the debate about costumes really began, there was a sexual tension in the house that was palpable. If I hadn't already heard a million classmates describe - in intimate detail - the positive attributes of my mother's fit figure - I still would have been thinking about her as she and Dad discussed their options. Listening to her voice - and the illicit nature of their conversation ... I began to become obsessed.

As the two of them discussed different combinations of outfits that they could wear, I imagined my mother in each of those provocative costumes. Soon, just imagining wasn't enough. I opened a web-browser with the search history blocked and I searched for mature women in the costume they described. When the pictures came up, I found the one that looked the most like my mother - or the one that was the naughtiest - and I imagined that it was her wearing that costume.

The options for what my parents could wear were quickly narrowed down to a few select choices. The majority of the costume combinations that they found on the internet for committed couples did not lend themselves to swiftly and simply removing enough of the costume to have sex. Those requirements quickly narrowed the field.

If you want to get seriously turned on by hearing your parents discuss something, try listening to two of the most practical people ever - as they debate the technical and practical advantages of one costume over another. My mother was so completely lost in their analysis that there was no hesitation at all in her voice as she - in clear language that painted very vivid pictures - discussed how they were going to go about getting Dad's cock out of his costume and buried inside of Mom.

For most people, I am sure that the technical nature of their conversation would have been off-putting. In the home that I grew up in, however, this was the equivalent of watching live porn. The imagery that their analysis invoked had my face in place of dad's - with my cock (not his) being buried inside of my mother's pussy.

I masturbated multiple times that night. Each time, it was while thinking of my mother and I wearing costumes - and me fucking her in some stranger's house - while Dad's coworkers watched. It was quickly turning into an addiction.

~~~

I knew that I had crossed a definite line when, the next day at school, I plotted on how to get a webcam tucked away in their room so that I could see my mother in her bra & panties - or pajamas - or, possibly even, nude. Even as I told myself that this was a violation of my parents' privacy, I found the app that I needed, installed it on Dad's laptop, stuck a piece of electrical tape over the little light that indicated that someone was using the webcam, and then I tested the connection.

Mom and Dad came home with three or four sets of costumes. They had decided that debating the pros and cons was no longer good enough - they actually needed to test the things in order to see if they would work the way they intended.

For me, it was time to test the app.

I sat at my computer, pretending to play my game. Whenever Mom and Dad were in their room, I toggled the display over to the webcam and I watched them as I listened in. I'd hoped ... maybe ... that I might get the chance to see my mother's naked body. I got a thrill out of seeing her in her bra and panties that night - but she never got naked. I am, however, disappointed to report that Dad was "au natural" and practiced sticking his dick into Mom's costume to see whether or not that combination was a winner.

In the end, they decided on the policewoman uniform and the prison inmate outfit. Mom said that she would add a Covid mask to her outfit - along with dark sunglasses - to keep her identity a secret. Dad had an old black ski-mask or balaclava that he was going to use.

With the date of the party looming closer and closer, my parents were growing more and more excited. As they folded the costumes and put them back into the bags, they discussed who would return the ones that they didn't want.

Dad mentioned that the orange jumpsuit had been tight in the abdomen. He told Mom that he thought he should probably go up a size just to be safe - so that they didn't tear the thing while they were having sex. Dad had a doctor's appointment after work the following day - so Mom was going to have to return the costumes. Dad handed over the receipts that she would need to show in order to get their refund.

As boring as all of that was, my finger was poised over the record button. I knew that I had slipped from simply voyeur to depraved son when I anxiously waited for my parents to get ready for bed - hoping - praying even - that I would get a glimpse of my mother's naked body. Already, I had seen far more of her bare skin than I had ever imagined that I would. I'd gotten to see her in the bra and panties that she'd worn under her sexy uniform. I had recorded the footage of her wearing the seductive outfit as well. Now, though, I was anxiously awaiting the "pièce de resistance" ...

The sultry, guilty, doe-eyed look that my mother gave to my father as she reached behind her back to unclasp her bra had my heart pounding so loudly in my chest that I thought that it might explode. I wanted my mother to give me that look. I wanted her to nibble her bottom lip, whisper that we shouldn't be doing such depraved things, and then bare herself to me ... and then ...

... she turned away from the camera.

I heard myself curse aloud, loudly enough that it echoed off of the walls in the hallway outside of my room. I held my breath - waiting for my mother to yell at me for cussing at my computer games again. She was, however, apparently too distracted with what Dad was doing to notice my too-loud outburst.

Dad slid Mom's panties down and groped her ass. My mother's cotton underwear hung just below her gap. I leaned forward - straining to get a peek at my Mom's sex and became so entranced that I startled myself when the tip of my nose touched the screen.

I quickly sat back in my computer chair. My brief window was ... gone. Dad was standing between the camera and Mom. As she pushed his underwear down, I turned my head to keep from looking at his butt. I was forced to turn back, however, as Mom busied herself doing something in front of him. All I could see were the sides of her breasts - past the edges of Dad's thighs - and her elbows. If I had to guess, she was sucking his dick.

My hand slid into my pants without a second thought and I stroked myself as I thought about my mother's lips and how they would feel with my penis between them - or rather how her lips would feel on my penis - hopefully as she used her tongue to caress it - while sucking ever so gently ...

I groaned in relief and disgust as my penis began belching a hot load of jism into my underwear. I spent the next five minutes cleaning myself up and - by the time I got that done - Mom and Dad were in bed. Dad was on top - driving into Mom. Their bodies were covered with a sheet - so there was nothing to see - but the erotic sounds were still enough to drive me crazy with lust - and my penis was already asking if we were going to try for Round 2. I told it to go back to sleep.

I hid the recordings that I had saved and then ran the app that cleaned up my search history to remove any record of nefarious or illicit activity. The program left all of the innocuous stuff as it was - so that parents who checked their kids' computers wouldn't suspect that things had been carefully tidied up. There were two options for how to run the app: black-list or white-list. I had chosen white-list. The rules for the white-list option was that anything other than white-listed websites like Google, YouTube, Facebook, and other nonsense was wiped away with the touch of a button.

When Dad had first set up the router, I had worried that I was going to need to use a VPN to keep him from checking the logs to see where I went. As I have mentioned, though, Dad is more accountant than computer-geek. At one point in the router installation, he had gotten stumped while trying to follow the instructions to set the thing up and had called in the local expert - me. After discussing everything that I was doing with him, I was confident that I'd never have to worry about him getting past the screen that let him reboot the thing if it was acting funny.

Once my computer was tidied up, I climbed into bed. Since my balls were already empty, I was asleep pretty quickly after docking my phone in the charger.

~~~

The next day at school, the chatter about Mom was on the up-tick. Apparently, their animated sex-play each night was being influenced by their open discussion about the party - and that had also affected my mother's clothing choices. She wasn't wearing a tube-top and leggings by any stretch of the imagination - but she was definitely in something far more daring than she'd ever worn to school - and *everybody* noticed. I even heard at least one administrator and a couple of the janitors talking about it. I am fairly confident that I was not the only hot-blooded male in the community that jerked off to a fantasy about a certain hot Algebra teacher that night.

I didn't have a class with my mother. In fact, during my four years of high school I had only had one class with her - during freshman year. After that, it seemed like the admins tried to make sure that I had classes with other teachers. I actually thought that was a good idea. My mother never let me get by with anything - but one or two of the other kids who had parents who worked at the school seemed to at least *attempt* to use it to their advantage.

When I ran into Mom in the hallway that afternoon, I noticed that she was wearing her hair a little differently as well - and maybe a touch more make-up. The change was subtle but I agreed with the others that it was noticeable - and it did, indeed, make her look hotter. It was, quite honestly, a struggle for me to keep my face unreadable as she greeted me.

My mind flashed back to the costume that she had at home. The costume itself was fairly simple - a dark blue half-jacket that looked like a cop's coat, matching bikini bottoms, a uniform cap, and a belt with a holster and a clip for handcuffs. The material that the costume was made out of was fairly legitimate-looking. There was so much skin exposed, however, that you could barely call the thing a uniform.

As I looked up - into my mother's eyes - I had trouble *not* imagining her in the pieces that she had tried on the previous night. I also struggled with the accessories that she and Dad had talked about adding to the outfit.

In addition to the handcuffs, the fake handgun, the sunglasses, and the Covid mask, Dad had requested that Mom wear a choker collar around her neck. He wanted one with chains or spikes. Mom told him that she had only seen a leather one. She also planned to look for fingerless gloves when she browsed the selection of accessories when she returned costumes that they weren't keeping. Down below, the accessories got a little wilder than just a choker. Dad had requested fishnet stockings. Mom had added high-heeled boots that went to her knees.

Even though I had been breastfed, Mom's tits didn't have a lot of sag to them. The jacket part of the costume would be held together at the bottom by a zipper that would only be zipped up far enough to lift her already-fabulous tits and put them on display. There was a fake badge sitting on the left breast - which really only served to draw more attention to the wearer's cleavage - and a name tag on the right one that said, "Officer Smith".

All-in-all, it was a very sexy outfit - and the accessories that Mom and Dad planned to add would make it even sexier. The more I thought about my mother in that costume, the more I wished that it was me fucking her at that party - rather than my father.

~~~

That night, as I spied on my parents in their room, Mom informed Dad that she had not been able to swap his costume for a larger one because they were out - and on backorder. She had been instructed to bring the thing home again and - when the larger size came in - they could do the swap. Dad was freaking out about it. Mom told him that he'd just have to make do with the tighter outfit if the larger one failed to come in.

Dad was getting a little too wound up about it - worried that they wouldn't actually be able to have sex like they'd planned - or that his costume would rip and his coworkers would somehow know who he was.

Mom tried to console him by offering to put on the costume - with all of the new accessories - and sucking his dick.

The Fates had hated me the previous night but that night ...! That night made up for it!

Rather than one of them standing with their back to the camera, they were standing side-by-side - facing each other. I quickly mashed the button to start recording what I was seeing.

Mom stood in front of Dad and started undressing him. My hand slid into my pants as if it had a mind of its own. I told myself that I needed to try to focus and not lose control this time. I knew it wasn't going to happen, though. I jumped up, eased my door shut, locked it, grabbed my small trashcan, and set it in front of my chair. I dropped my shorts and underwear to my ankles, sat down, and started slowly stroking my penis as I watched the scene unfold.

Mom gave Dad some seriously-hot doe-eyed looks as she undressed. Dad had completely forgotten about his anxiousness regarding his costume. He was just as focused on Mom getting naked as I was. Mom looked into his eyes, gave him a guilty, shy smile that made my penis throb in my fist - and dropped her bra.

"Fuck me ...," I heard myself say.

I knew, right then, right there, that I was probably going to Hell.

I hadn't gotten to see the rest of my mother's body naked yet but - already - I was promising myself that if ... someway ... someday ... somehow ... I ever got the chance to fuck my mother - I was taking it. I would prefer that she didn't hate me when it was over but - dammit - I needed to fuck that gorgeous woman and finish inside of her pussy.

As Mom's skirt came off, I stopped stroking. I didn't want to blow just yet and I was already teetering at the edge of the precipice. I squeezed my anxious prick and told it that we were on hold. I held my breath as the panties came off. When she bent over to push them down and step out of them, Dad ran his fingers through her hair. She nibbled the front of his tented shorts. I hoped for a peek at her pussy - but it wasn't to be. However, as soon as she was completely naked, she asked him if he wanted a quick look at all of her. Thank goodness he said yes or I might have yelled through the walls.

I watched in rapt fascination, as my mother slowly turned herself completely around while staying in the same spot. I only saw the front of her sex - her mons and vulva - but it was enough to have me drooling like a mindless idiot. I wanted my mother more then than I ever had before - and that was saying something.

I dreamed of sliding my cock into her, I began to imagine what her vagina would feel like as I slid inside. I groaned - once again - as my balls found their release. I was disappointed that I'd shot off so quickly. I told myself that - if I ever got the chance to fuck my mother - I needed *NEEDED* to last longer.

I thought - as I gazed at my mother's nakedness - that I could not become any more aroused. I was wrong. As my mother pulled those fishnet stockings up her legs, she did it while staring into my father's eyes and nibbling her bottom lip. I imagined that I was him. I was seeing her profile as she teased him but - in my mind - I was the one devouring her - from head to crotch - as she tugged those sexy stockings up her long, thin legs.

After the stockings, she pulled the bikini bottoms on. As Dad (and I) watched, she tested the things to see if she could pull the crotch to the side so that he could get his cock into her. The material was flexible enough to work. Dad offered his fingers to let her confirm. We both groaned aloud as she tugged on his wrist and buried two of his fingers in her already-wet pussy. The fishnets got in the way, though, and fuck if I didn't curse even louder when Mom dug her fingers into the fishnets and snapped the threads - leaving a tattered hole around the crotch of her panties that only made the whole outfit a thousand times hotter. Dad's eyes were smoldering as he pistoned his fingers in and out of her squelching hole. She moaned and kissed him and then pushed him away and told him to behave.

I *had* to find a way to fuck my mother ... There was just no other way around it.

Mom strapped the belt around her hips - hiding some of her bare flesh but - dammit - the way it hung off of her hips made the whole thing even sexier. It got hotter still as she sat on a chair and pulled on those shiny black hooker-boots. My penis had hardened again. I did not believe that I would be able to climax a second time - but there was nothing that could stop me from stroking my cock as I watched my mother sheath her sexy body in that suggestive outfit. She pressed the heel of her boot against Dad's shoulder and then stood like some kind of strip club dancer. I cursed again.

Mom put the cop's cap on. The choker was just a simple leather thing but - damn if it didn't make me want to fuck her throat to see if I could snap it ... The Covid mask was the only addition that took away from the overall sex-appeal. Dad told her so. She removed it. Even the dark sunglasses made her look hotter.

You'd think that tucking those perfect naked breasts into clothing would diminish the look - but it actually enhanced it. Mom's perky tits looked fucking fabulous in that barely-zipped-at-all jacket. The fingerless gloves worked really well with the long sleeves of the jacket. Together, they focused the eyes directly on Mom's perfect rack. Dad looked like he was just as entranced as I was.

Mom added the handcuffs, the gun, and a nightstick that dangled delightfully and made both my father and I groan with lust. He was sliding his hand up and down his cock at that point as well. Mom swatted his hand away and then spun in a circle to let him have a look at the finished outfit.

With her long, dark brown hair hanging loose, my mother was a fucking goddess. The costume perfectly framed and highlighted Mom's assets. She could have any man in the world eating out of her hand and - though the outfit was definitely not school-appropriate - she was actually wearing more than most women wore to the beach. No woman at the beach, though, regardless of how small her bikini was - would be able to out-shine my mother - at least not in my eyes.

For the thousandth time, I told myself that I *had* to find a way to make love to her - to have sex with her - to fuck her ... as hard and fast as I possibly could ... before I erupted too early and ended my fun.

This wasn't a *want*. It was a need.

~~~

Dad was about to lose his mind when the costume store finally called. The party was just two days away. The store called, reported that they'd gotten a new shipment, and Dad could trade his smaller size costume for the larger one.

The moment Dad stepped in front of me - before he even told me what he wanted - or asked me if I would do him a favor - I knew ... I knew this was my chance.

Dad had a stack of monthly reports due - and needed to work late. Mom had an afterschool staff meeting. Dad asked me to do the swap for him. I didn't even feel guilty when I told him that I would. My plan was actually coming together. This was meant to be!

~~~

Most of the time, I walked to school. We didn't live that far away, the weather was generally nice, and we only had two cars. Since I needed to run across town to swap the costumes, though, I needed wheels. Mom had me ride to school with her.

With Dad's costume sitting on the seat in the back, I climbed into the passenger seat and strapped in. Mom was looking as sexy as usual and I had to keep reminding myself not to look at her over and over again as we headed for the school parking lot.

When we arrived, Mom handed me the keys, kissed my cheek, and thanked me for doing them a favor.

I tried not to let my face show the ugly deception that I had planned.

All day long - as I moved from class to class - I warred with myself.

I was sick, depraved, evil, ... I was going to burn in Hell. I could not have been more excited ... or nervous ... worried that something would go wrong.

At the end of the school day, I drove to the costume shop, traded Dad's costume for the larger one, and took it to the car. I laid Dad's costume on the back seat, closed the door, locked the car, ... and then I walked back into the store again.

I grabbed the costume that I had just returned, slipped into the changing room to try it on, and moved all around to make sure that it fit the way I needed it to. I took it off, folded it up, put it back into the package, walked to the checkout, and then I paid for Dad's old costume.

This costume went beside me - in the passenger's seat. I raced home, ran inside of the house, and hid it in my room. Then I got back into the car and hurried back to the school to pick up Mom.

"Did it go okay?" she asked, as I handed her the keys.

"Perfectly," I told her, giving her the adjusted receipts and returning her charge-card that she'd sent along - just in case I needed it.

I know what you're thinking. No.

I did not pay for my costume with Mom's credit card. I paid cash - out of my mowing money. There was nothing to trace the second costume - Dad's original costume - back to me.

As Mom and I traveled home, I worked through the rough plan that I had come up with to keep Dad from showing up at the party.

If Dad showed up, I was screwed. If I talked, I was screwed. If Mom pulled my balaclava off, I was screwed.

I had - of course - already decided that, if I were found out, I would simply confess. I would tell my mother than I was in lust with her and that I'd hatched this devious-but-flawed plan to have sex with her. I would likely be thrown out of the house and disowned if that happened - but I didn't care. The planets had aligned enough for this thing to seem like it was possible and - dammit - I was taking my shot - consequences (and my soul) be damned.

"Are you coming into the house, Lucius?" Mom asked. "Why are you just sitting there?"

"Daydreaming," I admitted.

There was a delay of a few seconds before Mom came back with a question that caused my heartrate to spike horribly.

"What's her name?" Mom asked, giving me a wink and a teasing smile.

I blushed as I looked at her - worried that my mouth would betray me and blurt her name out. Mom giggled at me, oblivious to the turmoil burbling in my mind.

~~~

The day of the party arrived, finally. I'd been worthless, all day, at school. My mind was completely consumed with my plan - going back over the details - looking for every possible thing that could go wrong - trying to come up with contingencies for what to do if things didn't go exactly to plan.

When the final bell rang, I grabbed my backpack and raced down the hall - earning myself a verbal warning from Mom's boss - the principal. I slowed to a fast walk and made it to the outside doors without getting myself a detention.

A detention, I belatedly realized, could have potentially thwarted my plans. I needed to get home before Mom and Dad. I had considered sabotaging Dad's costume the previous day - but there was always the chance that he would try it on again - and discover that the zipper was busted.

I ran all of the way home. I was panting for breath by the time I got into the house. I threw my pack onto my bed and grabbed the pair of pliers that I had tucked into a cubbie-hole on my headboard. I raced down the hallway, headed for Mom and Dad's bedroom.

I looked at every detail about where the package was in the room, how it was sitting, and ... as I removed the costume from the package ... how it was folded together inside of the plastic. I could not give Dad any indication that anything was amiss. He *had* to discover the problem with his costume at the last minute. It was the only way this was going to work.

The Fates had smiled on me, yet again, the previous night. As I sat at my computer, watching my mother get naked to service my father again, she had mentioned to him that they needed to take separate cars to the event because she had to stop and pick something up. When he argued that they could ride together anyway, she had contended that they needed to arrive separately in order for his coworkers not to be able to place the two of them together - which would spoil their supposed "spontaneous" encounter with another person at the party.

I studied the zipper on his outfit. I picked one of the teeth about two inches from the start of the zipper. I carefully placed the head of the pliers on the selected tooth and then squeezed - causing the gap to close. Worried that might not be enough, I picked the tooth ahead of that one and clamped the pliers down on it and then twisted and pulled. I didn't stop until the metal tooth was completely deformed and pulled out of the zipper-run. I tucked it into my pocket to throw away somewhere else.

I looked over my work, worrying over every little detail. I wanted to test the zipper - to see if it worked - but I was certain that if I tried it and it worked the way that I expected, the zipper would come apart and the sabotage would be obvious. I folded the costume back the way it had been, tucked it into the package, and put the package back exactly as it had been before.

I took the pliers back to the garage and put them back where I'd borrowed them from. I went to the side door, opened it, and chucked the broken zipper tooth into the grass. I closed the door again.

I went to my room and emptied my backpack. I put the costume in the bottom and then put my laptop, mouse, and headphones on top. Then I zipped it closed. I grabbed a snack and then changed into some casual clothes for a night of "gaming with my friends".

When Mom got home, I asked her if she could give me a ride to Steven's house. She tried to get me to ride with Dad, informing me (as I already knew) that she had an errand. I told her that I wanted to get there early. She grumbled at me, but gave in.

When Dad got home, I casually mentioned to him that I was going to Steven's to play games and wasn't sure when I'd be back. He and Mom were racing around like chickens with their heads cut off and neither one of them was really paying attention to me. I hollered to Mom that I was going to go sit in the car.

What I was really doing was buying insurance. I went to Dad's car, knelt down, took the cap off of the valve stem, and I pressed my fingernail into the stem, against the little button on the core, to let some air out of his front tire. I let out enough air that I calculated that it would affect the steering but not be too noticeable. Then I put the cap back on the valve stem. I went to Mom's car, put my bag in the back, climbed in, and pulled my belt on. I messed with my phone while I waited. Honestly, I wasn't even looking at the screen. I was still hyper-analyzing my plan.

If everything worked out, I was going to have sex tonight - and not with just anyone - but with my mother. I felt the front of my pocket to confirm that the little tube of gel was there. It was. Worried that I would shoot off too quickly because I was wanting this so badly, I had decided to cheat a little. I made an excuse to visit one of the gas stations to grab a cold soda. In actuality, I'd slipped into the men's room and I had bought a little package of desensitizer from the vending machine in the restroom. I planned to rub it on my cock before I put on the costume - to try to keep myself from getting too excited and ruining the moment before it even started. I wanted to remember this. I wanted to savor it. I wanted to look into my mother's eyes as she squeezed my cock inside of her - and then watch her face as she rode me.

That was, roughly, the plan that Mom and Dad had worked out for themselves. Dad would sit on the arm of a couch or something, he'd unzip the fly on the costume, and pull out his cock. Mom would pull the crotch of her bikini-bottoms to the side, mount him, and then bounce on his cock in front of all of those strange people.

Even if somebody were watching them closely, they would only catch a glimpse of Dad's dick before Mom covered him up. As conservative as my parents were - with every single part of their lives - this was still a huge leap into the "wild" for the two of them - which is why they were losing their minds as they raced around to try to get ready.

Mom was delayed long enough that I had started to worry that Dad had already put his costume on and had found out that it was busted. They still had more than an hour to get there - and Dad had talked about showering first because he was nervous-sweating - but ... the longer and longer I waited ...

Finally, Mom came racing out of the house and jumped into the car. She tapped the button on the garage door opener.

"Everything okay?" I asked.

"I couldn't find my handcuffs," she grumbled.

"I didn't even get to see this costume of yours ...," I complained.

"Oh!" she gasped. "No! It's ... risqué ...," she replied, blushing slightly. "It would not be appropriate for you to see me in it, son."

"Oh," I said, sounding dejected. "I guess I never expected you and Dad to go to something like that ..."

"Yes, well ...," she said, her breathing growing heavier. "We're ... giving this ... a try. It will - likely - be a one-time event."

I merely nodded, pretending to lose interest.

Mom's costume was in her bag in the backseat. Since she knew she needed to make a stop on the way to the party, she'd had to come up with somewhere to dress other than at home. Though it definitely was not ideal, she had picked one of the trashier gas stations - one that had outside bathrooms. That happened to work out well for me because it was closer to Steven's house.

I had picked Steven's house for where I was supposedly going to play video games because his house was little more than a mile from where Mom and Dad were supposed to be for the party. My plan was to get out down the block from Steven's, telling Mom that I'd walk the rest of the way to save her time. After she was on her way, I'd hoof it - cutting across yards and down alleys to get to where the action would be happening.

I'd spent several long hours, mapping out my route. I had considered changing into the costume at Steven's and leaving my bag there - but I didn't want anybody knowing what was going on and I thought that walking down the street in a prison-orange jumpsuit - even this close to Halloween - would probably elicit questions that I didn't want to answer. For that reason, I would be carrying a heavy backpack for several blocks - simply so that - if Mom looked inside for any reason - she would see my computer stuff.

Mom drove to where she needed to run her errand, hopped out, and rushed inside. She left her phone in the cradle. As soon as she was safely gone, I grabbed her phone, unlocked it, and set it to vibrate - and then - just in case - I also turned on airplane-mode. I settled it back into the cradle and prayed that she didn't look at it.

When Mom returned from the store, she was in even more of a rush because the stop had taken longer than she had planned. She raced towards Steven's house, grumbling that it was two blocks out of her way. She immediately realized that she'd said the words out loud and apologized to me.

I told her that I forgave her. I wondered - if my mother ever found out all of the deception that I had employed - in order to get the chance to have sex with her - if she would forgive *me*.

If I actually managed to pull this off, I had already decided that I would take this secret to the grave. There was, obviously, the off-chance that Mom or Dad would figure out that it had been me. If that happened, I figured that I'd just vanish and change my name. I didn't see how we'd be able to come back from that ...

I pointed to the side of the road and told Mom to drop me off, saying that Steven's house was only a couple blocks to the left. In actuality, this spot put me a couple blocks closer to where she was going to be in a few more minutes. Not knowing that I was lying to her yet again, she quickly agreed to let me out at the spot that I had indicated.

I grabbed my backpack from the rear seat, told my mother that I loved her, and then closed the door. She drove away in a rush.

As soon as Mom turned the car to head towards the gas station, I started walking after her. As I walked, I asked myself if the lies, the plotting, the deception, ... if it was all worth it. I thought about the videos that I had tucked away in a hidden folder on my computer. Videos of my mother in her risqué, as she called it, outfit.

"Yes," I told myself. "Even if I fail to get the ultimate prize, it has all been worth it."

I walked two blocks, took the alley to the right, and raced past a barking dog in a fenced yard - my heart pounding in my chest. From that point on, I stuck to the sidewalks but continued along the path that I hoped that neither of my parents would follow to get to the party. I tried to guesstimate how much time would elapse between Mom arriving and me. I used my phone and remoted into my computer to peek into Mom and Dad's room through the laptop that was there.

The view was shifted, slightly. The laptop had been bumped or moved. Dad was racing around like a rat in a maze. I had to believe that he'd already found the problem with the costume and was trying to come up with a way to repair it. I didn't know what other explanation there could be. I closed the connection to my computer and walked faster.

When I finally arrived at the party, Mom's car was already parked down the street from the house. I approached carefully, trying to make sure that she wasn't still in the car. It was already growing dark. I slipped up to the residence next door to the party house, located the hidden spot among the bushes that I had identified via internet satellite pictures, and set down my backpack. I pulled out the costume, quickly changed, and tucked my clothes into my bag.

I pulled the balaclava onto my head and used my phone to check my appearance to make sure I hadn't missed anything. My sneakers were an older pair. Mom had not remarked on them - so I hoped that she wouldn't notice. If everything went well, she would be looking at something other than my feet when the big moment arrived.

If my fingers hadn't brushed the pocket on my shorts when I tucked them into the backpack, I would have completely forgotten about the desensitizer. I quickly tore the package open, squeezed it into my hand, and rubbed it up and down my shaft - and all around the head of my dick. I threw the trash into the bush and zipped up my costume.

I double-checked, one last time, to make sure that my bag was completely hidden.

I headed straight towards the street until I reached the sidewalk. Then walked toward the house as if I had parked farther down the street.

As I made my way up the walk toward the house, my heart was pounding in my chest like a bass drum. Half of me wanted to chicken out and run home. The other half told that half that they were stupid for having let things come this far if we were not going through with it.

As soon as I stepped into the house, though, I nearly turned and bolted. The place was wall-to-wall with bodies - and everyone was touching each other inappropriately or stealing kisses. No one was speaking because they didn't want to give themselves away - but I think my crotch got groped by at least two guys in addition to a large number of females before I even left the entryway.

I immediately started looking for Mom. When I found her, Mom's eyes were burning with lust. Her cheeks were crimson with embarrassment. I watched hands reach for her and she evaded most or pushed them away. She was completely out of her element. She was not at all prepared for this. Hell, I was fairly certain that I was more sexually active than her and Dad combined - and I was overwhelmed by all of the fondling and touching.

When Mom saw me, she rushed headlong to grab me. She was almost breathless.

"Let's find a quieter corner," she whispered - rushed and embarrassed.

She pulled me by the hand, searching for someplace for her to do what she had planned. Obviously, she just wanted to get this over with - so that she could make her escape. I almost felt sorry for her.

At the same time, things were going better than I ever could have hoped and - barring Dad walking in within the next few minutes - I stood a really good chance of accomplishing what I had only dreamed of - all those days ago.

I was going to have sex with my mother.

As Mom pulled me through the crowd, I wondered at the incongruity of my parents' plan. Supposedly, my mother and my father were going to hook up - without people knowing that their little rendezvous was staged. The flaw in that design, obviously, was that Mom was dressed like a naughty cop - and Dad was dressed in a prisoner's jumpsuit. Anybody who saw them together would likely think that they had intended to hookup from the start.

My brain, obviously, was too over-taxed with all that was going on. Even though the two of us were very clearly going somewhere together - Mom and I were both still being randomly groped by those we passed by. Between the anonymous touches and anticipating that I might soon get my cock into my mother's pussy, I was harder than folded steel.

Mom tried to pull us into a bedroom - but there were already two couples having sex on the bed - side-by-side. I didn't get to watch the show for very long because Mom was pulling me back out to the hallway again. Somebody was fucking on the dining room table. Another couple was using the counter in the kitchen. Mom was getting desperate.

She grabbed a wooden stool, pulled it over by the wall, and pushed me towards it. As she reached between her thighs to get herself ready for my cock, I gaped at her. She saw that I wasn't moving and stepped closer.

"Let me help you ...," she said, almost panting with nervous desire.

She unzipped the fly of the orange jumpsuit, bumping my hardness with her hand in her hurry. I groaned. She made me stand up, scooted the stool out a few inches, and then sat me down again - leaning me back more. With her high-heeled boots on, she was tall enough that it looked like she just planned to use the rungs on the stool as a step to mount me..

Since her costume was already opened so that she could sit on my cock, she simply had to pull my penis out of the opening in my costume. I admit that I wasn't much help to her. I was so gobsmacked as I looked at my mother's sexy body, in her provocative costume. I looked around at the others - watching us - all of us realized what was about to happen ... I was immobilized.

Mom, however, wanted to get this done. In her hurry, she wasn't really paying very close attention to the little details that might have given away the fact that I was not the person that she thought I was.

My sexy mother - conservative schoolteacher and devoted spouse - pulled my stiff prick through the opening in my costume, just as she hooked her toe into the side of the stool - and then threw her leg up over my lap to get my dick where she wanted it.

In that brief moment of time that she got the chance to visually inspect my cock - before dropping her pussy onto it - she realized.

"You're ... not ... my husband ...," she said.

We both groaned as she sank onto me.

Apparently, the logical part of my mother's mind calculated that - since the damage was already done - she might as well at least take a moment to properly assess the situation - while considering her options.

Mom did this analysis by hooking the heels of her boots into the footrests on the stool that I was sitting on, raising herself up so that she could look at the penis that had been inside of her, and then putting it right back in again.

We both moaned as she did.

I reached for her hips. My palms wrapped around my mother's ass - in those sexy fishnets that she had on - and I squeezed.

Mom raised herself up again - until only the tip of my penis was still inside of her - and then she sank down again.

As the two of us moaned in unison, my mother raised herself up and then sank onto my cock - over and over again. I squeezed her ass to tell her how much I loved what she was doing - and used my grip to help her rise - so that she could plunge me back inside of her again.

I was so thankful that I'd gotten the desensitizer. I knew that - if I hadn't - I would already have nutted. The feeling of my mother's pussy - clenching fiercely each time she slid me inside of her again - was mind-blowing. I didn't know if her pussy normally gripped and squeezed like that - or if it was doing that because she was feeling guilty for fucking someone other than my father - but I loved, loved, loved the way her vaginal muscles were tugging at my cock. It took every ounce of self-control not to moan her name - or - worse - "Mom".

The dirtiness of that thought made my cock pulse and throb. Mom noticed. She looked into my eyes with lust blazing in those orbs and she gave an erotic moan that had my balls bloating with my seed.

I'm not sure who it was, but someone close by decided to try to join our fun. As Mom was focusing on raising herself up again - and I was anticipating that luxurious feeling of her velvety slickness gliding down my length again - someone reached over and tugged the zipper down on her half-jacket.

Mom growled and I swatted the guy's hand away with a glare - but the damage was done. I watched in rapt fascination and lust as my mother's perky breasts tumbled free. They bounced and jiggled each time she raised herself up and then dropped onto me again.

She leaned forward, slightly, and whispered, "Squeeze them. Tug on the nipples."

I didn't need to be told twice.

As I cupped my mother's breasts in my hands and admired their heft, their tautness, and their beauty, I thanked God once again that I'd used the gel on my cock. Just holding these bad boys was erotic enough to make me shoot off under normal circumstances.

Apparently, Mom was happy about how long I was lasting as well, because she remarked on it.

"Are you getting close?" she asked.

I merely shook my head. Then I pulled her breast to the opening on my balaclava, got her nipple between my lips, and I sucked for all I was worth - while dragging my tongue back and forth across her sensitive nipple.

She hissed at me - and I thought I'd messed up.

"The other!" she gasped. "More!"

I suckled my mother's perfect breasts - switching back and forth between them - as she continued to bounce on my cock.

She kept fucking me for another few minutes before she whispered again.

"You're bigger than my husband," she whispered. "I'm going to cum soon. You can cum inside ..."

Gel or not, those words shifted the tempo - and sent me speeding towards my release.

I sucked my mother's tits. I squeezed her ass and pulled her down onto my cock harder and faster. I matched my hip-thrusts to hers - pounding into her as much as I could in my precarious position.

"Ungh ...!" she moaned. "So close ..."

I released my mother's breasts, grabbed her ass, and I slammed her onto my cock - again and again. Her insides fluttered and then twisted and pulled ... and I felt her molten fluid surround the head of my penis.

That was the end for me. I groaned as I began to spill the contents of my balls inside of my mother - deep inside. My sexy mother sat on my lap - with my cock buried completely inside of her - and she ground her pussy around and around on me - while moaning through her own release.

As soon as she finished, she grabbed my head in her hands. For a split-second, I worried that she was going to unmask me. However, she pulled her own mask up, grabbed my face again, pulled it to hers and then she gave me a lusty kiss that was so mind-blowing that I doubt I'll ever be able to forget it.

When our lips parted, she looked into my eyes and said, "Thank you ... but I really need to be going."

She fixed her jacket, climbed off of my lap, hesitated for one moment, and then bent forward to suck the mess from my penis. Then she tucked me away and zipped me up. She gave me a lusty grin and then pulled her mask back into place. A moment later, she turned and headed for the exit.

I headed for a different one - worried that - if Dad had not already arrived at the party - he might come in at any moment. If he saw someone dressed exactly like him, he might be suspicious enough to come after me. I went to the back door, slipped out, into the yard, and headed back towards the house where I had hidden my pack.

Even though there was no fence around the yard - and no signs that they had a dog, I was still a little jumpy after my earlier experience. I quickly snuck around the house, peeled off the prison-orange jumpsuit, and then started to tuck it into my backpack. At the last minute, I simply shoved it into the package that it came in, tucked it into a thick evergreen bush, and left it there. I got dressed, shouldered my pack, and headed the opposite direction of where Mom had parked.

Not being at all certain that she and Dad weren't currently having a heated conversation in front of his coworker's house, I tried to stick to the shadows until I could get far enough away to call for an Uber. I had just started to pull up the app when I realized that it was connected to Mom's credit card. It would also show her where I had been picked up. I needed a different plan. I continued walking until I reached a gas station. I called a taxi company instead and had them pick me up there.

I gave the guy my destination and showed him my cash. He dropped me off at Steven's house. I loaded my Uber app, requested a pick up, and waited for my next ride to arrive. I hopped into the car, gave him my home address, and then double-checked my backpack as I rode along.

When we got home, I thanked him, added a tip, and got out. I headed for the house.

I half-expected a confrontation when I got inside. There were noises coming from my parents' bedroom but I didn't hear yelling. I dropped my backpack off in my room and went to the bathroom. I considered showering but I really, really wanted to smell like my mother's pussy - and her mouth - for the rest of the night. I peed, brushed my teeth, and headed for my room.

I stuck my headphones on, powered up my monitor, and checked in on Mom and Dad.

My father and mother were in bed, uncovered. Dad had Mom's hands shoved above her head, pinning them to the mattress. With his free hand, he groped her breasts roughly, swatted her thigh, and called her a "cheating whore". Then he proceeded to fuck the loving shit out of my mother.

Despite the revulsion of seeing my father's bare ass bouncing up and down, Mom's erotic sounds - as she begged him to forgive her - and to "make her his again" by cumming inside of her ... those naughty words, phrases, and sounds stirred up the memories of my mother bouncing on my cock.

I grabbed my trashcan, dropped my shorts, and stroked my cock - listening to the sexy sounds that my mother was making as Dad fucked her while I imagined that it was me. As she cried out with her release, Dad and I both joined our own climaxes with hers.

I quickly closed the connection to Dad's laptop, restored my computer desktop to its usual "harmless" state, and then I rolled into bed and pulled the covers up. With my balls freshly drained - for the second time that night - I was soon asleep.

~~~ The End ~~~

Favorites and comments send more Lit-readers my way - which is a great way to express your appreciation for this chapter/series - and encourage me to write more.

Special thanks to Monagamous_Now, Terence2, and KerrikWolf for the time and effort they spent to make this episode better than it was when I penned it.