steph and samâs pool day shenanigans pt. 1 đđ»đ©
(this is a work of fiction!! all characters are consenting adults!! i do not condone actual incest! or kink in public places!!
here is part 1 of a kinky saga that came from me and @diaperedgalor âs brains. enjoy yall!!)
it was a hot friday afternoon in the middle of july, and she had been so excited to go to the pool with her big-girl friends. that is, until mommy told her she had to bring sam with her.
now, she rolled her eyes as she and her friends walked down the street to the neighborhood pool, an excited sam following behind like a lost puppy.
it was embarrassing enough that she had to bring him, her 26-year old brother who was still just a baby. mommy made sure no one would forget that he was a baby, dressing him in his favorite green swim trunks covered in dinosaurs, the obvious waistband of a swim diaper sticking up around his abs. the dinosaur water wings around his bulging big strong arm musclesâŠ
stephanie found herself annoyed. and embarassed. and also a little bit flustered. why was she flustered?! she saw sam all the time!! but seeing him now⊠so obviously a baby, and so obviously a big strong boy at the same time⊠it made her big sister heart flutter.
âsam is soooo cute.â stephanieâs friend becca said, holding his hand as they walked.
sam giggled as she cooed at at him.
when they made it to the pool, stephanie remembered mommyâs instructions.
âcâmere, sam, i need to sunscreen you. or momâs gonna get mad at me.â
sam toddled over and plopped down on a pool chair, arms out, waiting for his big sister to apply sunscreen.
stephanie was thorough. she rubbed the baby sunscreen lotion between her hands, and carefully massaged it into his skin. okay, maybe this part wasnât so bad.
she loved the powdery sweet smell of the baby lotion. she loved the feeling of samâs warm, smooth skin under her hands. she loved the way he giggled and moaned at her touch.
âbig sissy, that feels sooooo good.â
she chuckled, and kept going, carefully rubbing it all over samâs shoulders and back.
suddenly, stephanie heard a trickling sound. she and sam both looked down to see pee dribbling down his leg, forming a puddle underneath him.
âoopsie.â sam pouted.
âi thought he was wearing a swim diaper.â stephanieâs friend taylor said, frowning.
âhe is! you can see the waistband.â becca said with a giggle.
âswim diapers donât hold pee,â stephanie explained. âthey arenât very absorbant, otherwise theyâd just swell up like a balloon in the water. theyâre mostly just for number two.â
stephanie shot sam a look, then she muttered under her breath, âdo not have a number two in the pool, mmkay?â
âbut⊠but⊠big sissy? what if i canât help it?!â
âtry to help it.â stephanie said, jumping into the pool, leaving sam alone on the concrete pouting.
âsammy, do you want to get in the water with me?â becca asked kindly, offering her hand.
sam nodded, happily taking her hand and following behind her.
sam had never seen so many girls in swimsuits before. now, following behind becca, he found himself enamored by her skimpy little black and white polka dot bikini. she didnât have to wear a swim diaper. he could see so much of her tan skin, the curve of her bottom, the way it moved with every step.
âsam, stop being a perv.â stephanie yelled from the pool.
he blushed. âwasnât doing anything.â he mumbled, but he could feel his little prince parts trying to get excited underneath his soggy swim diaper and his swim trunks.
becca didnât notice, or didnât seem to care. she just continued leading sam to the shallowest part of the pool.
âiâm gonna get in first and then you can jump to me!â becca said. âdoes that sound fun?â
sam nodded. he liked becca a lot.
becca waded in until the water was to her waist. then she opened her arms wide.
sam giggled and jumped, crashing into the water with a huge splash.
âvery good, sammy!!â becca giggled, helping sam crawl onto her back. âyou are such a cute lil boy!! i wish i had a baby brother.â
stephanie, who had been watching this whole interaction suddenly swam over from the other side of the pool.
âwell, you donât. and samâs MY baby brother.â
stephanie grabbed sam away from becca and held him on her hip the way mommy did in the pool. her arms wrapped protectively around him.
sammy squirmed happily. he was enjoying being fought over. he was especially enjoying the familiar feeling of stephanieâs warm, smooth bare skin against him as she held him close.
âhi sissy,â he said, splashing happily in the water. stephanie knew the pool made him feel especially little. he let his guard down and really let himself enjoy being a little baby.
âhi sammy.â stephanie said affectionately.
âheâs sooooo cute. does he know how to swim yet?â becca asked, giggling and pinching samâs cheek.
âno, becca. heâs a baby. of course he doesnât know how to swim yet.â stephanie said, gripping her brother even tighter. she was starting to get a little annoyed of becca trying to get all close to sam.
she didnât like the way becca was ogling sam.
taylor, on the other hand, couldnât care less, she was floating on her back, sunglasses on, completely ignoring the baby boy in their presence.
but sam noticed her. he noticed her pretty wavy hair and hot pink bikini. she looked like one of the pretty girls in daddyâs âgrown up moviesâ that he sometimes watched. sam wasnât allowed to watch them, but once or twice he snuck a few glances.
âsamâ stephanie snapped in his face. âstop staring, youâre being a perv.â
âi donât know that word.â sam said, splashing the water happily in stephanieâs face.
stephanie groaned. âyes you do. a perv is what you are when you stare at my friends and your lil boy parts get hard.â
sam looked down at his âlil boy partsâ but he couldnât see them well through the water.
he wasnât sure what the big deal was. sometimes his boy parts got excited when he saw mommy and sister. sometimes, they even got excited from daddy. daddy/son playtime didnât happen often, but when it did, sam liked it a lot.
he felt his cock twitch involuntarily inside his swim diaper from thinking about daddy.
then, suddenly, stephanieâs hand was reaching down, cupping the front of his swimsuit.
âwh-wh-what are you doing, big sissy?â sam asked, flustered at his sisterâs touch.
âjust checking to make sure youâre behaving. why do you have a stiffie right now, hmm? iâm gonna tell mom when we get home!â
stephanie was mimicking the way mommy sometimes spoke to sam. the teasing tone, the embarassing questions. steph was always taking notes on how to make her baby brother feel even more baby.
sam blushed, squirming against his big sisterâs touch.
âungh⊠sissy,â he whined, bucking and rubbing against her hand.
stephanie chuckled, then took her hand away.
âuh, uh, uh. mom said nothing naughty, or weâll both get in trouble.â
sam whined, but agreed. he didnât want to get in trouble, and he certainly didnât want to watch his big sis get in trouble. it was often a worse punishment to have to watch steph get her bottom beat by daddy than to get spanked himself.
and daddy did not hold back when it came to steph. he loved her hard. she was his favorite, after all. but that also meant he punished her hard when she deserved it.
sam shuddered, remembering the bruises on stephanieâs bottom that had lasted weeks after a particularly hard beating.
sam decided he would be good today. and he would help his sister be good too.
âsammy?â becca asked sweetly. âdo you wanna play categories with me? i can teach you the rules.â
sam looked over at his big sister, big doe eyes asking her permission.
sam nodded excitedly. âokay!!!â
with sam occupied playing games with becca, stephanie and taylor leaned on the ledge of the pool, soaking up the sun and casually chatting.
âwhyâd you have to bring him anyway?â taylor asked.
âmy mom made me.â stephanie shrugged.
âisnât he kind of⊠old to be acting like this?â
stephanie suddenly felt fiercely protective of sam.
âhe might be 26, but heâs also a baby.â stephanie said, crossing her arms. âhe canât help it.â
they watched as becca and sam started to play a different game. this one required sam to get out of the pool and run and cannon-ball into the water.
he made a huge splash with each jump, dumping water on all the poolgoers around him. he was too happy playing with becca to even notice. eyes lit up, arms splashing in the water, he looked like a ray of sunshine personified.
stephanie felt a wave of deep affection for her brother.
âif you have a problem with my baby brother, you can fuck off, taylor.â stephanie suddenly said, swimming away from taylor and over to becca.
taylor followed reluctantly.
âgo again, sammy!!â becca was cheering. âi bet you can make an even bigger splash this time!â
sam happily toddled out of the pool and got ready to run and jump again. but this time, he didnât run and jump. he paused. he squatted. and he grunted, his face scrunching up in concentration.
âwhatâs he doing?â becca asked, looking confused.
âoh my god. is he pooping?!â taylor asked, her own face scrunched up in disgust.
sure enough, samâs face melted into relief as a large lump filled the back of his swim diaper. stephanie could see the mound through his swim trunks. there was no hiding it at all.
she felt her princess parts start to feel funny and tingly, like they always did when she watched her little brother go poopy.
she fought the urge to rub herself through her bathing suit. but now, she needed to be in big-sister mode. she leapt into action.
âsammy, stay right there. iâll come help you-â
but it was too late. sammy jumped back in the water.
âew, ew, ew, ew EW!!!!â taylor screeched, beelining for the steps. âstephanie, i cannot believe your brother just pooped himself, and got back in the pool. iâm leaving.â
âtaylor, he doesnât know any better!â becca said. âcâmon, sammy, follow me.â
becca and stephanie led sam back out of the pool.
stephanie couldnât help but stare at the back of his drenched swim trunks, the waterproof material clinging to his strong thighs. the huge lump clearly filling the back of his swim diaper. and the waistband of the diaper itself, visible across his ab muscles.
âcâmon, letâs go to the ladies restroom.â stephanie said, ushering sammy towards the bathroom.
taylor and becca were trailing behind. becca looked hopeful, like she was excited to watch sam get his diaper changed. taylor, on the other hand, still looked disgusted, but also intrigued. against her better judgment, she also was curious about the diaper change.
all three girls went into the restroom, which was full of ladies changing out of wet bathing suits and into dry clothes. several of them were taking off their wet bikinis and standing in the middle of the restroom, topless.
samâs jaw dropped. his stiffie returned.
stephanie rolled her eyes.
âcâmon, ignore them.â she said, gripping samâs hand tighter and leading him towards the private room in the back with a changing table.
âgo lay down on it. with your legs up.â stephanie instructed. she was about to close the door behind her, when she saw becca and taylor both standing in the doorway, looking hopeful. like they might be invited in.
âuh, uh, uh,â stephanie said to her friends . âyou cannot watch. mom barely lets anyone other than her change him. youâve gotta stay outside.â
the girls huffed but agreed.
stephanie carefully locked the door. with the heavy door closed and locked behind her, the sounds of the pool were muffled away. the changing room felt cool and humid and it smelled like chlorine.
suddenly, the world was just her and sam.
sam, who was laying there on his back, legs in the air, obviously hard and messy beneath his swim trunks. sam, who was now sucking his thumb and kicking his feet back and forth. sam, who looked over at steph and said âsissy!â in his joyful, little voice.
âhi sammy.â stephanie said gently. she walked over and stroked samâs face softly. âbig sis is gonna get you all clean, okay?â
sammy giggled and nodded.
stephanie got to work. she usually wasnât allowed to change sam- that job was reserved for mommy. but mom had given her permission to today.
and stephanie wanted to do a good job.
she carefully pulled samâs swim trunks off. she took a moment to admire him laying there in his messy swim diaper, his cock obviously hard and excited beneath the soggy padding.
âsammy, whatâs this about?â stephanie asked with a giggle, running a hand firmly over the front of his diaper.
he whined. âgot excited.â
âfrom all the girls in the restroomâŠâ he pouted. âand becca and taylor.â
stephanie giggled. âoh yeah? what about them?â
âthey have parts like mommy and sissy have.â sam said, still sucking his thumb and looking thoughtful. âprincess parts.â
âthatâs right, sammy. they do. and what kind of parts do you have?â
sam giggled and put his hands over his face. âprince partsâŠâ
âthatâs right!â stephanie said, patting the front of the diaper again. god, samâs cock was practically straining to get out. she wasnât sure how she was going to get through this change without touching her own needy parts.
sam felt hard as a rock, and the smell of his messy diaper was starting to waft up to stephanie.
focus. focus!!!! she told herself.
she undid the sides and opened up the diaper, wrapping it in on itself the way sheâd seen mommy do. then she got to work cleaning sammy up, wiping down his skin, cleaning every nook and cranny with the baby wipes.
she loved the intimacy of getting to touch her brother like this. getting to take care of this most intimate little parts. putting her hands on his âprince partsâ as he called them.
she was aware that she was not making his raging hard-on any better. in fact, her touch was making it worse.
sammy sucked his thumb, watching his sister take care of him. he watched her with the passive, blissful look of a little boy who was completely at her disposal. she could do whatever she wanted with him, and that excited him even more.
âsammy,â steph scolded, when his cock twitched again. âiâm not gonna be able to get another diaper on you like this.â
he didnât respond, just shrugged and kept sucking his thumb. his hand went down to his parts and he started absent-mindedly stroking himself.
stephanie just about collapsed to the ground from arousal.
âsammy, stop, youâre not supposed to be doing that.â she grabbed his hands and shoved them down, pinning them both to the changing table.
a flash of need sparked in his eyes at her roughness.
that look in samâs eyes was enough for the dam to break.
steph could feel herself aching and needing beneath her swimsuit. she needed her brother, and she needed him now.
she suddenly lowered her head and took his cock into her mouth.
the sound sam made was half gasp, half moan. he was equally surprised and relieved to feel his sisterâs mouth around him.
stephanie worked quickly, one hand stroking samâs cock, while her head bobbed. she took sam deeper and deeper down her throat, remembering how mommy sometimes did this during samâs changes.
stephanie knew this was for grown-ups. she knew this was reserved for mommy. but she didnât care. she didnât stop.
she gripped samâs thick thighs, feeling his orgasm wrack through him. she rode him through it, mouth never stopping. she breathed through her nose as sammy came down her throat with a needy, raspy yell.
and with that, stephanie swallowed and sat back.
stephanie and sam made eye contact, both dazed and relieved and suddenly aware that they had just done something very naughty.
âuh oh.â stephanie echoed.
