Archive of Our Own

“No way chat, I don’t care what you say, we are not playing PEAK next stream. No friendslop while we’re grinding ladder, ok? You can all have peace once I finally hit gold. I’m gonna shut down the stream now, see ya everybody!” Lily cut the feed, taking off her cat eared headset and setting it down on her desk. She let her long auburn hair loose, trying to relax as she checked her stats for the day. A few hundred concurrent viewers max, almost $100 in donations too. Not a lot, not as much as a “real job”, as her mom would call it, but to Lily it was plenty. It covered her expenses, anyways, and it was better than working at Walmart.

When the 19 year old graduated high school she had taken straight to her PC instead of to a local college. Since then, Lily had been streaming 6 hours a day, 5 days a week to her small but consistent viewer base, earning just barely enough to keep her mom’s complaining at bay. This was getting harder with every day, as her mom complained plenty. Over the last year and a half, her mom had gotten pregnant, given birth to Lily’s baby sister, Dani, and gotten laid off. She had begun to rely on Lily increasingly, both financially and to help with chores and babysitting. As Lily’s responsibilities grew, so did her frustration with her family and her resistance to stepping away from her streams.

Feeling too tense to relax, Lily looked around her room. It was a dark, only a little light peering in from the semi closed curtains. Clothes were strewn across the floor, soda cans littering her desk. Across her room, on the other side of the bed, her door was shut and locked. Perfect, she thought. She barely hesitated to reach into her pants. She has always so horny after a stream, 6 hours of just sitting at her PC and by the end she was on fire, begging for release. Grabbing the needy 19 year old meat between her legs, she pulled down her waistband with her other hand and let her musky cock reveal itself. Half hard but already dripping with precum, Lily moaned, now stroking her growing member with one hand while the other navigated to some bookmarked porn. She began to lose herself in the pleasure, fingers and shaft becoming slick with pre letting her stroke faster and faster – until suddenly.

*KNOCK KNOCK*

Lily tried to force her now fully hard 8 inches back into her pants, throwing a sweater on her lap to cover the obvious bulge. Her mom, as expected, entered a couple seconds after the knock, carrying a small cradle with her. Lily swiveled on her gaming chair to look over at her, blushing with embarrassment and unsatiated lust.

Lily’s mom looked at her with something between disappointment and concern. Her eyes scanned the dark, musky, messy room. “Don’t you ever clean up in here?”

Lily, used to this treatment and now certain her throbbing cock was not in view, rolled her eyes. “I was just working mom, I’ll clean up soon. I’m busy right now ok?”

“Oh please, you were just streaming I-
“Mom.”

“I wouldn’t call that wo-“

“MOM!”

“Ok, ok. Well, I hope you’re not too busy to watch Dani. I have an interview tomorrow morning and its far away so I’m gonna be out of town tonight. I really can’t afford another sitter. She’ll need to eat soon, so make sure you feed her the formula I showed you before. I’ll be back tomorrow afternoon after my interview, ok?”

“Mom, I told you, you have to let me know if you want me to watch Dani, I was gonna go out tonight!”

“Well, until someone in this house gets real work, you’re just going to have to suck it up. I’ll be home just after dinner.” Lily’s mom was clearly exasperated now and putting her foot down, leaving the cradle on her daughter’s bed before moving to leave the room.

“Mom, wait!”

“Bye!” The door closed, and Lily could soon hear the front door lock and her mom drive away.

Lily swivelled around in her chair anxiously. She had been looking forward to a quick jerk off session before she went out tonight. Now she had to cancel her plans to babysit instead. She did a few more spins, dreading the boredom of being forced to watch after her baby sister for the next few hours. Looking down, she could see her throbbing cock still tenting her pants. ‘There’s no reason I can’t still jerk off’, she mused, ‘Let’s just make sure this nuisance is still asleep first.’

Standing up and walking over to the bed, Lily looked down to see her baby sister sleeping in the cradle. Dani was roughly 6 months old with a small tuft of wispy brown hair of a lighter shade than her older sister. She was dressed in pink pajamas, and between her lips was a large blue plastic pacifier, which she sucked on loudly and happily. Dani always, always had a pacifier in her mouth. The baby loved to mouth on things, on anything she could get her hands on. As far as Lily knew, anytime Dani wasn’t sucking on something she wasn’t throwing a tantrum until something got in her mouth. That gave Lily an idea.

“Suck it up?” Lily muttered to herself absentmindedly, recalling her mom’s words. “I’ve been doing lots of sucking it up recently. I’m not the only one who needs to suck it around here.” Sweats dropping to her legs, her cock throbbed at full mast, inches away from the sleeping baby. Then, she grabbed the blue pacifier in her sister’s mouth and slowly pulled it away. Almost immediately, without waking, Dani began to squirm and cry in her sleep, until just as quickly, Lily pressed her cocktip up to Dani’s mouth. Even while sleeping, Dani latched on immediately, soft pink lips wrapping around half of Lily’s pink head and tickling the tip with her tongue.

“Ooooooooh… oooh… that’s kinda good. I didn’t… hah… think it would feel this good…” Lily said, grinding back and forth in her unconscious sisters mouth. Pushing her hips forward, she felt her sensitive tip slide all the way past the baby’s lips, which only made Dani suck more vigorously.

“Good girl… good, good girl. Mommy said I have to feed you dinner, right? Well, this is probably easier for both of us, right Dani?”

Lily slowly moved her tip in and out of Dani’s mouth, letting her baby sister’s lips drag gently around her whole head before pushing it back into the suckling mouth. Her toes clenched against the floor, legs stiff, not used to the feeling of the baby blowjob. It felt like for minutes she was just standing there, cock in her sister’s mouth, trying to let the wet, hot, sucking feeling last.

Then she couldn’t take it anymore. As if she was possessed, Lily thrusted forcefully into Dani’s mouth. The fat cockhead caught Dani’s tiny, tight little throat at the perfect angle and with a slurping, choking wet gag forced it open.

“Glllrrrkkk, guuuukk, guuuuuuuuuuk!” Dani’s eyes were now wide open, but she couldn’t react to the intrusion in her throat.

Lily felt a shiver go up her spine as her sensitive tip was massaged by her sister’s esophagus. That was the final straw. “Unnn…..mmmmmmmm….aaaaaaAAAAAaA SHIT! Ahhhhh… fuck!” She groaned and her balls throbbed as her cock began to violently pump out its pent up load directly down Dani’s throat hole and into her waiting stomach. Lily looked at her sister lying down, head tilted back, throat bulging out with dick. She could see the bulge in the baby’s throat spasm and twitch each time her aching cock spurted out another heavy load. And another. For Lily, her orgasms didn’t just feel like they lasted for minutes, they really did last for minutes. Pump after pump, strand after strand of sticky white goo spurted from her dick in slowly diminishing amounts until Lily felt like she could pass out, and Dani was so full of seed she looked like she had swallowed a golf ball.

Almost two and a half minutes had passed before Lily’s cock was completely spent. A brief sense of clarity washed over her as she emptied the last drops of cum into that needy throat. No longer incredibly horny, the realization of what she’d done washed over her. Did she just rape her baby sister? Was she just another terminally online freak attracted to fucking kids? No, she did what she did because she was bored and frustrated, making her baby sister suck off wasn’t attraction or perversion, it was revenge, plain and simple. Even as Lily mulled all this over in her head, she still could barely bring herself to pull out her softening cock still buried halfway in the 6 months old throat. For Dani’s part, though she seemed shaken up and undeniably full, the baby wasn’t panicking, just using her little tongue to lick the salty shaft filling her mouth. Even after getting pumped full of cum, Dani never stopped sucking.

Eventually Lily’s over sensitive cock left her no choice but to pull out with a wet, slick, *SLHP* noise. Slick and wet with saliva, it was completely clear of cum. To her surprise, Dani had swallowed every drop of her massive load. The big bulge in her tummy proved that. Now there was no cock in the 6 month old’s mouth, nothing for the orally fixated baby to suck on anymore, and almost immediately Dani seemed more distressed than she did even when Lily was buried in her throat. She began to sob, then cry, then wail. Thinking quickly, Lily grabbed the blue pacifier just next do Dani and stuck it back in the baby’s mouth. Immediately, Dani’s lips closed around it and her crying stopped.

“Maybe this babysitting thing is easier than I thought,” Lily said to herself. She towelled off her dripping member before checking on Dani again. The baby was still suckling contentedly, eyes already starting to close with sleepiness. Leaving her sister to rest in the dark room with a belly full of cum, Lily casually went to wash up and make some food. Forty minutes late she returned to her room fresh, squeaky clean, and with a plate full of chicken nuggets and hot sauce. By now Dani was fully asleep, still sucking on her pacifier.

With nothing to do, but unable to leave, Dani decided to play some video games for a while. She booted up a fighting game for a while to try and practice for the next day’s stream. At some point she had to hit gold or she really would have to play PEAK. She practiced for a bit before going into a game. Feeling confident after spending ten minutes throwing combos in the lab, she hoped into ranked on her alt. DEFEAT. DEFEAT. DEFEAT. Loss after loss, soon she was down 6-1 and her frustration was building. A frustration that was manifesting as a relentless need in her shaft.
Slowly, her head turned to Dani, still sleeping in the crib, and an unmistakable need rose deep in her chest up to her brain. She had already fucked Dani’s throat once, what was one more time? It was risky though, what if her mom came back?

As if to answer her prayers. Lily’s phone buzzed. She picked it up to see a text from her mom.

‘Hi Lily, I’m not going to be home until tomorrow morning. Please babysit Dani while I’m gone – make sure she eats. Love you.’

Lily quickly texted her back. ‘Ok mom. She ate a bit earlier but I’m gonna feed her dinner now. See you tomorrow.’ Her mom reacted to the text with a thumbs up. That settled things. Lily and her baby sister had all night to play.

Lily stood up, and soon she was standing over Dani again, practically licking her lips at the thought of her sister’s throat wrapped around her dick again. This time, she wanted to try something different. Much to Dani’s displeasure, Lily took her pacifier again, before lifting her out of the cradle and placing her on her back at the end of the bed, so that her head was almost hanging off the edge. Then, Lily kneeled over top of Dani on the bed, directl over her face so her throbbing cock grazed against soft cheeks. Lily reached between her legs to guide her tip to Dani’s mouth, but Dani got there first. Already, stubby arms were reaching up with soft hands to grab her older sisters meaty cock, something that the 6 month old had learned tasted quite nice in her mouth, even if it was quite big. Craning her head back even further to fit the head between her lips, soon Lily was groaning as she slowly squatted back and forth, fucking her baby sisters mouth again.

This time she was in a much more controlled position, able to push in and out of her sisters needy lips with much better leverage. What she really wanted to feel was her throat though, so she stopped resisting. In one swift motion, she dropped her weight on her sister. Her cock sank deep into the infants battered throat until it was hilted and Dani’s panicked eyes were covered by her older sisters massive, musky bullsack.

Lily cried out, the sensation of baby throat around her shaft already overwhelming her. It was so hot and wet inside her baby sister she thought her cock was going to melt, the girls throat was absolute bliss. She groaned, leaning deeper and grinding her cock against her sister’s insides. It was all in now, but she continued to put pressure on the baby, never pulling out even a centimetre. Something wrapped around her head lovingly, kissing every sensitive square inch of it with its hot folds. Was it the end of her sisters throat she was in? Her stomach? She didn’t care, savouring the pleasure of baby throat as long as she could. Another long groan of pleasure. Not long now.

Not pulling out even once, Lily suddenly came, milked to orgasm by her baby sister’s spasming throat. She grunted, pushing forward and feeling another huge, agonizingly long orgasm coming on. She could practically hear each jet of steaming hot cum shoot out of her, each painful pulse of her aching cock signaling another massive load of slime being emptied into Dani’s stomach. Her eyesight blurred, and she watched in foggy double vision as her sister’s tummy inflated even more from the sheer amount of cum. This orgasm was even longer than the last somehow. Nearly 3 minutes later Lily felt her orgasm finally fade. She was still mostly hard, filling Dani’s throat. The warmth of the tight passage wrapped around her was so nice, she decided to leave her dick inside.

Still in a kneeling position, Lily whirled around so she was she was sitting on her back on her heels. Dani, throat still impaled around her shaft, had no choice but to come with her. Lily looked down at her little sister, mouth and neck fully bulging with her older sister’s dick. Baby lips still pressed practically against Lily’s balls, Lily traced her fingers with one hand over the bulge in Dani’s throat and upper chest. She shivered and felt her cock swell once more, the tickling sensation of touching herself through her baby’s sisters neck reigniting her arousal. The way Dani squirmed, the way her small body bulged with Lily’s size, the way she smelled, the way she felt so hot and wet… it was so… sexy? Lily blinked. Did she really find this hot? Did she actually think her tiny, underdeveloped baby sister was sexy? No way. Not a chance. She was not a freak who was into babies. She was just surprised that using the infant to get off was way more convenient than she thought.

Wanting to prove herself wrong, she slowly pulled Dani off her cock. A long, sticky, bubbling trail of saliva and cum clung to Dani’s lips, leaving a gooey film on Lily’s shaft. Dani sputtered and coughed, the oral abuse having completely taken her out of it and leaving her gasps hoarse and weak. All of a sudden, her cough turned into a wet gulp, and Dani’s filled stomach tried to eject an enormous glob of cum out of her reflexing throat. Lily saw this happening and grabbed Dani’s face with one hand, her three middle fingers forcefully stuck down her mouth. Keeping her baby sisters throat plugged, Lily waited until the convulsing, attempting to puke baby settled on the bed, the older girl’s semen finally settling in her inflated tummy.

“Sorry Dani, but you are not wasting a drop, and especially not on my sheets,” Lily said basically to herself. Dani was gonna need some time. Unfortunately, her older sister wasn’t about to give her any. It took about five minutes without having her dick inside Dani that Lily decided she wanted to go again. She held Dani between her legs, lips pressed to her tip, then pushed her baby’s sister head down her shaft until the infant’s chin rested on her balls and her eyes looked weakly up at her older sister. Then she crossed her legs over Dani’s head, powerful adult thighs keeping the infant locked in place with Lily balls deep in her throat.

Lily moaned. The feeling hadn’t gotten any less pleasurable. Not wanting to waste the moment by cumming, Lily opened her phone and started scrolling. She texted her friends, did some shopping, snapped a couple pictures of Dani on her dick, and watched some YouTube videos. For over an hour, Dani was trapped between her thighs, unable to do anything but smell the musk on Lily’s crotch and feel her cock occasionally twitch inside her. When Lily finally put her phone down, it was because she had dropped it unconsciously. Completely drained, she had fallen asleep, passing out balls deep in her sister’s throat.

Hours passed with Dani still trapped between her older sister’s thighs. With nowhere to go and unable to move, she had struggled for a bit before finally getting accustomed to sucking happily on the massive pacifier she was being fed. She sucked on her sleeping sisters’ cock for hours. Lily barely stirred, only letting out the occasional unconscious moan and soft twitch as even in her sleep she enjoyed the sensation of her baby sister’s throat. Being completely enveloped by something so tight and hot and wet while she slept was a surreal experience, her dreams becoming hot and hazy and heavy.

In her dream she was standing over a crib, her baby sister Dani naked inside. In the dream haze she could see the baby’s chubby cunny, feel her soft skin. In what felt like no time, she was pounding the infant doggy style, swearing she could feel Dani’s hot insides wrapped around her. In no time at all she was pumping a huge load inside her dream sister.
She was cumming in reality too. The real and imagined sensation of Dani pleasuring her causing her cock to spurt out more baby goo down into the overpacked tummy of her baby sister. After another lengthy orgasm, another sensation rose through Lily’s unconscious body. Dani’s suckling encouraged her older sister to deposit even more inside of her. As the last drops of sticky cum were travelling down her throat, Dani felt something different begin to shoot out of Lily’s cock in a massive quantity. Hotter, wetter, much more fluid than her sisters baby batter, Lily was unconsciously emptying her entire bladder into her sister stomach. The steaming stream of piss quickly mixed with the goopy litre of cum already occupying the bloated tummy, become a hot churning mix, a soup of Lily’s desires emptied inside Dani.

Dani swallowed it all, not that she had any other choice. There was no where for it to go. Her belly inflated even more until it was a huge, sloshing mound of steaming liquid pressed into the bed sheets, weighing almost as much as Dani herself did. She tried to cry or struggle more but she was still completely held in place. Trapped as Lily’s cum and piss receptacle for the night, she eventually fell asleep.

Five hours and several loads later, Lily eventually woke up as the sun began to glow through her window blinds. She stretched, feeling unusually satisfied and drained. Then she looked between her legs, to see Dani, still impaled around her half hard cock, lips oozing with yellowed cum.

With a slow, deliberate movement, Lily lifted Dani off of her shaft until her cockhead popped free. A thick strand of saliva and cum clung between Dani's lips and Lily's tip before snapping, splattering across the baby's cheek. Dani stirred but didn't wake, her pacifierstarved mouth still working weakly at the air.

"Ohhhh fuuuuuuuck,” she groaned. For the first time in hours she felt cool air on her cock. She stretched out, trying to will herself awake. The room smelled like sweat and sex, the musky evidence of last night's fun clinging to the sheets. Her mom would definitely be home soon. Cleaning up as soon as possible was necessary.

She looked down at her cock. It was still hard and throbbing. She probably had time to deal with it first.

Lily's fingers hovered over Dani's swollen belly, tracing the stretched skin where her cum and piss sloshed beneath. Something twisted low in her gut. It wasn’t guilt or disgust. It was desire. The way Dani's soft and tiny body accommodated her, the muffled, wet noises she made, she could no longer hide just how sexy she found her tiny baby sister. She had to fuck her. Now.
She threw Dani onto her back, legs stretched out wide, and forcefully mashed her sore, throbbing tip up against the infant’s cunny. Her cock had been so overstimulated she could barely feel Dani’s soft lips press against her. She needed more. Kneeling over the 6 month old, she pressed her hips down hard. She felt Dani’s pussy stretch open around her cock and gave out a long, satisfied sigh as her dick sank halfway into the incredibly tight pussy.

Finding purchase in the girl’s hole, Lily started fucking harder, mating pressing her baby sister. “Dani… you feel so… fucking good! Ahhhhhh, fuck… your baby holes are so fucking nice! God you are such a slut, how have I never fucked you before?” Lily sank deeper and deeper into her sister, getting more and more addicted to fucking her baby sister with each thrust into her warm guts. Her cock was so deep in the girls overstretched pussy now that she could feel the warm gooey mix of piss and cum in Dani’s stomach, being pushed around to accommodate Lily’s eight inches.
For a moment, Lily felt a barrier. She thrust into it, smashing it with her cockhead, only caring about getting as much of her dick in the 6 month old as possible. Grinding her hips into Dani, it gave way and Lily felt her cocktip hugged by the even tighter entrance of the girl’s cervix. Her soaked balls rested on Dani’s ass, the entire thing now inside the girl.

That was too much for Lily. She cried out as yet another agonizingly long, aching orgasm overtook her and she pumped her thickest load yet into Dani. Every surface of Dani’s pussy was filled with hot cum, filling and ballooning her cervix with a hot ball of seed that sloshed against the one still in Dani’s tummy. Dani herself was unconscious now, the 6 month old’s brain melted and fried from being used as a cocksleeve for 12 hours straight.

Lily looked down and admired her work. Dani’s wet, cumslick tongue hung out at the side of her mouth. Her tummy was red and taut and swollen, her pussy sore and gaping, still stretched wide around her shaft still balls deep inside. Dani was the perfect fucktoy.

Her phone buzzed on the bed beside her. Another text from her mom.

“Got the job! Thanks for watching your sister. I’ll need you to watch tonight too, ok?”

Lily quickly texted back. “No problem mom, she was super well behaved! I can watch her whenever you need!” She looked down at her gurgling, unconscious baby sister. They were going to have a lot of fun together.

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Special thanks to the anonymous user who commissioned this work.
Hope you all enjoyed it~