Anna uses Billy to feel better

“What’s going on, bro?” Anna whispered to herself through a mischievous grin, gleefully watching Billy through a crack in her bedroom door. “Got any big plans? Are you going out tonight?”

Her older brother rounded the top of the stairs, and walked towards his room. Still peeking out at him from behind her own door, Anna wagged her butt in excitement.

“Oh, yes - I think you are going out!” she giggled.

Moving as quietly as she could, the unathletic nerd crept past her door and snuck up behind him, holding a small object in each hand. Billy didn’t hear her - he stretched his arms out wide as he slowly trodded towards his room.

When Anna reached him, she quickly came around his head with both of her hands. One clamped a perfume-scented rag to his mouth and nose, forcing him to breathe in the sweet, heady scent - the other held that busty beach milf photo out in front of his eyes.

“Mmph!” Billy moaned, his eyes bugging out. All at once, Anna’s meticulous programming began to take immediate effect on her muscular older brother.

“Suuurpriiissee~~” Anna sang in his ear with a giggle, sending a shiver of fear down his body.

Only a second later, he had slumped back in her arms, ****. A damsel in distress. No fanfare, no resistance. No fight. Just a loser getting knocked out. The message had communicated directly with his brain again, sending all the right signals just like Anna had trained him for... And he was ruined. His eyes crossed stupidly, his knees bent inwards awkwardly, and his big, heavy cock was growing and throbbing in his pants embarrassingly as he went under. Limp, useless, and leaning back on his little sister for support.

With all of his muscles and height, Billy was far too heavy for Anna to hold, so she had to struggle to slowly set him down on the floor at her feet.

“Oof,” she grunted, as she finally freed herself of her big brother’s weight.

Anna stood, wiping her forehead with effort, then grinned down to admire her handiwork. Big strong Billy, limp and sprawled before her. Crumpled. Out like a light.

Anna brought a finger to her grinning lips.

“Shhhhh…” she hushed him. “Just sleep…”

Billy did as he was told. Completely fucked, he just lay there, sleeping. Openly humiliated and defeated by his younger sister. His big dick pulsed in his pants as he slept, strong arms spread out wide. His heavy, trained body completely dormant.

Ahhh, that was satisfying. Anna smirked and cocked a hip. This was just what she had needed to feel better after what had happened with her academic rival. Seeing her mighty older brother so easily destroyed was the perfect pick-me-up. The perfect reminder of what her intellect could achieve. What it could overcome.

Anna loved turning Billy’s battle-hardened, athletic body so weak and floppy. She loved seeing him get put him to sleep. She loved using that little cheat code she’d put on her big brother’s brain. Feeling much better now, Anna regarded Billy’s peaceful face.

“You’re so uncool… I know I’m the one who experimented on you bro, but really? Knocked out, just like that? What a chump…” Anna grinned, moving a foot to rest on his heavy bicep. Pinning the large, strong, useless muscle to the floor, then slowly rolling it underfoot. Massaging his pacified, honed strength. “You’re an idiot…”

He really was pathetic. Limp and bow-legged on the floor like that. Anna’s intimidating older brother had fallen so far.

Anna lifted the busty beach milf photo, and regarded it with a smile. The way Bianca held that floppy sun hat to her head against the wind, her inviting grin. The way her large breasts strained her bikini. Anna chuckled, shaking her head.

“Just how strong is this stuff, anyway~?” Anna chided her stupid older brother, lifting the perfume-soaked rag to her nose to get a whiff for herself.

It hit her like a truck. She stumbled back a half-step, pussy squelching.

“Oh…” Anna moaned, holding the rag away from her face and taking a deep breath of clean air to catch herself. She closed her eyes, and tried to steady her breathing. Her little heart was pitter-pattering in her chest, as all of her past victories against Billy washed over her mind. The way she had completely taken over his life… Somehow, that scent had made the memories so much more vivid…

Anna lifted the rag again, taking another small sniff. The tip of her nose twitched cutely as she took it in. Her pussy twitched too.

“Oh… F-Fuck…”

She had been happy to just take this win and go study, just a moment before. But now… Holy fuck, she was horny.

Anna looked down at Billy, with a gulp. Her pupils dilated and her little heart hammered faster in her chest. He was deep fucking ****. Utterly crushed by the exposure to the stimulus. But though Anna had hushed him just earlier… She found herself wanting him to get loud. She wanted to send him deeper. Anna had changed her mind. She wanted - no, she NEEDED - Billy to snore on her pussy again.

With a gulp, Anna dropped to her knees beside him and reached out, taking his thick neck into her shaky hands to **** him out a bit. Gone was the mocking, in-control science bitch who had confidently slain a dragon with her sharp mind. All that was left was a shaking little leaf, who was horny as hell.

Anna licked her lips as she choked Billy out deeper with her hands, looking pretty fucking **** herself.

“Snore… Just start snoring… Fuck, I need it, snore for me…” she murmured like a zombie, while squeezing her **** older brother’s neck.

Anna took one hand off his neck, instead tightly clasping the perfume-soaked cloth to her face and taking in a nice, DEEP breath. She kept it there as her body began to tremble. Whimpers escaped her lips all on their own, squeezing the neck of her big bad bro tightly.

Her pussy gushed and quivered in her shorts, waiting for its reward. The reward it knew was coming. Anna just kept whimpering, squeezing Billy’s thick neck, waiting for her fucked-up older brother to give her pussy the loud, vibrating snores it so desperately craved. And the little scientist was nowhere to be found…

It was incredible. The potent power of that sweet scent - the perfume that took down Heather’s brats.That perfume had become their biggest weaknesses. Crumbling Billy’s strength, and dulling Anna’s mind. Perfect fucking Heather’s perfect fucking family, brought down to the same level as the rest of us mortals by the scent of Bianca’s sweet perfume.

It was all thanks to Anna. All thanks to her little experiment gone wrong. One whiff of that sweet smell, and the academic genius turned stupid. One whiff, and the legendary undefeated boxer got knocked out. Neither one could stop it. Neither one knew what had been building inside them until it was far too late. Anna had flown too close to the sun with her experiment, and now… She was plummeting.

“My… My mind…” Anna moaned, clutching her head.

She stumbled out of Billy’s room, pussy juice running down her leg. Trying to stagger back to her own room, as her weak legs kept giving out, and her pussy kept clenching. The poor former genius was completely overrun with lust.

She’d just made him snore on her pussy for… h-how long? Oh god, it was hours…

Her legs were unsteady and her body was weary as she crashed into her room. She struggled to collect herself enough to piece together what had happened - her failing mind attempting to remember how she got into this state. Trying to put together some semblance of the intelligence it used to be capable of. WHAT had happened to her…?

She… She choked Billy out. He was already ****, but she choked him out. Squeezed his neck until his legs started kicking. Until he finally gave in to her fucking demands and snored. Loud, ugly, snores. Perfect. Just what she liked from him. She had sat her **** pussy right on his face, gobbling up all of those embarrassing vibrations directly into her wet cunt. Taking them all directly from the source.

Anna had made Billy snore on her pussy in the very spot he’d fallen, moaning and bucking against his face, for almost an hour before Heather came home. Anna heard her at the front door downstairs, and whined. She wasn’t ready to stop. Then, looking like a needy little slut, Anna had dragged Billy’s limp, snoring body along the upstairs hallway and into the privacy of his bedroom, to continue the pleasure. He had no say in any of this. His only purpose was to be his little sister’s KO’d, pussy-kissing vibrator. And he was a faulty one, at that.

Anna had needed to **** Billy a few more times to get him snoring again, whenever it died down. A bit like starting and old, noisy, rattling lawnmower. Squeezing his thick neck in her nerdy little hands. Slapping his face in frustration when he wouldn’t fucking start right. But Billy had given it to her in the end, every single time. He’d snored DEEP into her needy fucking pussy… Vibrating her **** inner walls so nicely. Making her moan, and whimper, and stretch her legs out wider as she knelt on his face - loving the way that stretch felt on her wobbly, vibrating pussy walls.

What a horny little monkey she was. Fuck, she was tired… And her legs might give out any second. She’d wasted all of her study time, getting off. Getting her pussy snored on by a knocked-out boxing champion…

This wasn’t good. This had gone too far. She’d lost control of herself. Become a **** to her needs. S-She had to fix this… Somehow…

Anna collapsed into her bed with a grunt, exhausted and spent.

She would fix it later. Right now… She just needed to sleep. And to… Get this out of her system, she thought, as a hand crept down her body. She hooked two fingers into her wet, slutty, quivering hole.

“Y-You’re not cool at all… You’re not cool at all… Fucking loser… Fucking idiot…” Anna moaned in her pillow, starting to use her two fingers on herself.

She thanked her flickering, foggy brain for piecing the memories back together. Such nice memories. Billy had looked so stupid, on the floor… Sounded so dumb, snoring for the pleasure of a nerd… Anna wanted to make sure she celebrated the victory properly, after all…

“You’re fucked… You’re so fucked uppp… Guh, you’re fucked up… You’re fucked…”

Anna was sliding up and down in bed, rubbing her whole overworked, sweaty body against the pillow while her fingers worked their magic lower down. She looked like a mess. A mess with no self control at all.

She recalled through flashing images how she had owned him. How she had gotten into Billy’s brain. The way she had fucking RUINED his future, RUINED his career… And even if he recovered, the way she would always hold the keys to command his brain to fucking fail. She could knock him out so easily now… Like a fucking boxing noob. Anna groaned, and buried her face deeper into her pillow.

“You… F-Fucking knocked out… Well-trained… B-Buh-Buh-Bitchhh…” Anna moaned stupidly as she rode a particularly pleasurable wave. “Y-You’re not cool at all… I knocked you out again… You’re an idiotttt…”

And this continued deep into the night. The intelligent, sharp-minded genius, fingering herself into being a moron. A drooling, whimpering, moron. All while her older brother slept in the room next door, laid back limply on the floor beside his bed, with pussy juices splashed all over his dumb-looking face… A knocked out boxing prodigy, who’d just been snoring on a pussy for hours. So deep under that he wouldn’t be waking up until morning.

In his pants, his thick, throbbing cock was slowly softening. He had cum in his pants four times during his stupid, choked-out dreams, all completely hands-free. What a fate for the popular stud. And what a fate for the ruins of his genius little sister.