Rachel Comes Downstairs

"Hello?" you hear a voice call from the stairs. "Melanie, is that you?"

It's your youngest sister, Rachel, just barely 19, and a blonde stunner. She didn't have Melanie's tits - unfortunately, she was closer to a small B-cup - but she made up for it with a toned waist and tight, round ass that was almost always on display. And she had the kind of bubbly, naive personality paired with innocent face - elf-like, button nose, bright blue eyes - that just begged for corruption.

"Hello, is anyone there?" Rachel calls again as you hear her start to descend the staircase.

"Yeah, it's me," you shout, still idly pumping Melanie's gurgling face with a half-hard cock. Your brain naturally defaults to defense mode - trying to concoct an good excuse for what you're doing as if one might exist. But then you remember where you are and who you're dealing with: this is the Blowjob Universe! You're in charge here. And Rachel was already a bit of a ditz, so this should be easy.

"Holy fuck, David! What the fuck?" you hear Rachel whisper-yell as she enters the kitchen. With your back to her, all she can see is your bare ass while you hold Melanie's head in your hands, looking worse for wear. It wouldn't be hard for most anyone to figure out what had been going on.

You look back at her as your half-hard cock slips out of Melanie's chapped lips. Rachel's in her normal sleeping clothes - shorts and a threadbare t-shirt - with her shoulder-length blonde hair tied up in pigtails. "Oh, hey, Rach," you offer with a nonchalance that underplays the situation. "Just making Melanie her protein shake."

"Protein shake?" Rachel asks with justified incredulity. "It looks like she was blowing you!"

"Yeah, I get how it might look that way," you say, wiping your cock off in Melanie's hair and dropping her unceremoniously to the kitchen floor with a wet THUMP. "It's really just the most efficient way to do it. Aren't you an athlete? Don't you know about all this stuff?"

"Know about what?" she asks. Her stance softens slightly and you see your opening. This slut cares about her body way too much to use her brain, you think. Melanie had been popular based mostly on her looks (read: tits). Rachel took all of her self-esteem from being the best athlete of the three of you - not that it was a high bar. Constantly coming from or going to a workout, she loved nothing more than showing off the body she worked so hard on. Her favorite outfits were always some combination of a midriff-baring top and shorts that hugged tight to her ass - even in winter. Her sleeping outfit was more of the same - a white bralette and a pair of high-rise, loose-fitting shorts with her streaky blonde hair tied up in a messy bun out of her face.

"Semen has like triple the protein of a steak, everyone knows this," you lie with a smile. "Melanie apparently gets it from some guy at the gym, but he hasn't been around lately, so she asked me." Rachel's face has shifted from shock to confusion.

"And that....that works?" she asks with some clear trepidation in her voice.

"Apparently?" you say with a shrug, stepping over Melanie to stand nearer to your younger sister. "I mean, I assume that's why all gay guys are so fit."

Rachel nods along like the obedient moron she is because life never gives with both hands. Sure, she had the body of a supermodel - tall, tanned and toned and just waiting to be fucked - but, Rachel was easily the dumbest person in the family, maybe in the whole town, possibly the state. It wasn't the cute, whimsical kind of dumb you see in movies where she's just innocent and naive. No, Rachel was air-headed and gullible in a way that should probably have been studied or monitored at some point.

It had been a miracle that she passed any of her classes. Just like Melanie, there were always rumors about her fucking and-slash-or sucking her way out of academic trouble. Obviously, no one had never been able to prove anything - you certainly weren't going to ask your teachers if they were fucking your step-sister - but based on what you knew, there wasn't really any other way she could have graduated.

"You know, I could help you out too..." you suggest while grabbing her wrist and pulling towards your re-energized cock. Slowly growing, it twitches in excitement when her delicate fingers brush against it.

Rachel glances down at Melanie, who is still softly snoring on the cold floor. "You still have some, uh, left?"

What a fucking idiot!, you think with unbridled glee. "Plenty," you respond, suppressing a wide smile.

Fingers already halfway there, Rachel reaches out and grabs your cock, grimacing at sheen of sticky combination of sweat, spit and dried cum. Her hand is cold, but you barely notice as it starts to slowly stroke your hog. She looks up at you for some direction, and you wordlessly push on her shoulder until she's down on her knees. She continues slowly jerking your semi-hard cock until you push her hand away.

"You're gonna waste a bunch that way," you instruct, pulling her head forward by her neck. "You gotta get it right from the source."

"Oh, OK I guess that's-MMPH..." And just like that, both your stepsisters had finally gotten a taste of your dick. You didn't waste time celebrating that accomplishment, instead working to undo Rachel's top with the zipper along her back. It pops off her back and she shrugs it from her shoulders without letting your cock slip out of her mouth. Once her tits are free, you reach down with to find two perfect C-cup handfuls at your disposal. While you occupy yourself, Rachel starts bobbing steadily over your thick rod with softly moaning. "Mm...mm..mm...mm"

Even if the rumors about how she boosted her GPA were true, she must not have used her mouth much. Rachel was enthusiastic, but inexperienced. She was bobbing quickly, but not very deep. She was focusing on your tip, but barely using her tongue. Her sucking wasn't uniform, her lips weren't wrapped very tight and your balls were begging for attention. This girl needed some coaching.

You let her tits go and grab her head, pulling her off your cock. She's breathless, but looks up at you almost annoyed. "Hey! Don't make me do all that work and lose it!" she yells.

"If you're gonna do this, you gotta do it right!" you retort. "Open up! Tongue out!"

She dutifully pops her mouth open like a sex doll and you suppress a groan. "Chest out! Shoulders back!" Her back straightens. Ugh this gullible slut is killing me! You might never clue her in to what's going on - it's just too much fun to trick her.

Throbbing now, you push your cock back into her mouth, loudly moaning as her tongue slides against the bottom of your shaft. You don't get very far before her first gag sprays saliva across your midsection. "There you go, good form," you encourage. "Now keep your lips tight and relax your throat." She takes an inch or two more of you this time before....GACK!

But you keep at it, and soon she's taking down at least half of your thick member with her lips stretched wide. The tip of your cock bumps against the back of her throat, but you hold back on entering her throat for now. After a few minutes of light face-fucking, you pull her up again.

"The balls, you can't forget about the balls," you remind her, nearly breathless yourself.

"Oh right, right!" she says like this is a class she's taken before. She dives down to your undercarriage and begins to suck and lap at your full, hanging sack. Without needing the reminder, she makes sure to keep one hand busy steadily working your cock, now slick with spit. "There you go, treat it like a workout," you call out. Once your balls are wet - and after a few "maybe accidental on purpose" lick at your taint - Rachel pops your cock back into her mouth, going as deep as she can before gagging loudly. She retreats, takes a deep breath, and descends again, bottoming out close to halfway, but inching further down with loud gags.

"That's it, push it! Push it!" You lean into being a sexual personal trainer and shout empty encouragement at her. Eyes shut tight, Rachel continues to stretch her throat to accommodate your girth, pushing past her every instinct and vocal gag reflex. Ever the go-getter, she wasn't going to let your cock win. Your hands were providing some help, lightly pushing at the back of her skull, but most of the momentum was her own. And then suddenly, her throat opens like a trap door and your cock slid easily into her waiting gullet.

"Ohhhhhhh FUUUUCCCCK!" you groan while your knees nearly give out completely. You grab Rachel's head for balance, pulling her deeper with her tiny, elfin nose buried in your thicket of unkempt pubes. You can only imagine the smell after a day of sweaty mouthfucking and not even the thought of a shower. "Don't fucking stop!" you grunt. You might wake the neighborhood, but at this point, who cares? You'd welcome the company; you do better with an audience.

You slide your feet out past hip-width for a sturdier base and gird your grip with more tendrils of Rachel's hair. You're in the home stretch of this "workout" now. You start slowly pumping her cute face - up, down, up, down - but within a minute your hips and hands are dizzying blurs as they rocket your cock in and out of her throat.

"Oh fuck, it's coming, it's coming, it's coming," you repeat with every pore in your body screaming for release. With a tremendous roar, you inject a torrential flood of thick jism directly into your youngest sister's throat. Rachel's hands are out at her sides, unsure where to go with her fingers outstretched. Without your hands to keep her steady, her head may have flown backwards with each successive volley of cum. But still, she gulps greedily, hungrily in her desperation to keep every drop for herself. She nearly succeeds, save for a few dribbles from the corners of her mouth - probably inevitable given the size of your load.

Slowly pulled from your slimy cock, Rachel can barely hold herself up without your dick as ballast. She's a cum drunk mess, probably barely aware of where she is at this point. You're not much better, but at holding the nearby counter to stay upright on legs with the consistency of warm Jell-O.

"Good shake, right?" you croak with a weak smile.