I slammed the laptop shut but my cock was already throbbing hard in my jeans. The story on that incest sex fiction story site had me hooked—brother and sister, both over 21, sneaking around the house while Mom and Dad slept. Raw words about her wet pussy clenching on his thick dick, her whispering "fuck me harder, big brother" while he pounded her from behind. I couldn't stop thinking about it. My own sister, Jenna, was asleep down the hall. We'd always been close, but lately the tension had been building like crazy.
I crept to her room, heart pounding. The door was cracked. Jenna was on her bed in just a thin tank top and panties, scrolling her phone. Her legs were spread a little, and I could see the outline of her shaved slit through the fabric. "Hey," I said, voice low. "Can't sleep either?"
She looked up, eyes flicking to the bulge in my pants. "What are you looking at, perv?" But she didn't close her legs. Instead she smirked. "Bet you're on those dirty incest sex fiction story sites again. I saw your browser history last week."
My face burned but my dick twitched. "Yeah. So what? Those stories are hot as fuck. Brother taking his sister's tight cunt, making her cum all over his cock."
Jenna bit her lip and sat up. Her nipples poked through the tank top. "You think about me when you read that shit?"
"Fuck yes," I growled, stepping closer. "I stroke my dick thinking about bending you over and slamming into that pussy."
She reached out and grabbed my belt, yanking me forward. "Then do it. No more stories. Real life." Her hand rubbed my hard shaft through the denim. "God, you're so fucking big. I want it raw."
I shoved her tank top up and sucked one hard nipple into my mouth, biting just enough to make her gasp. My fingers slid into her panties and found her soaked. Two digits pushed deep into her hot, slick hole. "Jesus, Jenna, you're dripping. Been reading those sites too?"
"Every night," she moaned, grinding on my hand. "Stories about brothers eating their sisters' cunts, then fucking them stupid.
I want that. Eat me."
I ripped her panties off and buried my face between her thighs. Her pussy tasted sweet and musky. I licked her swollen clit in fast circles, then tongue-fucked her tight entrance while she grabbed my hair and humped my face. "Suck that clit, big brother," she hissed. "Make your little sister cum on your tongue."
She came hard, thighs clamping my head, juices coating my chin. Before she could catch her breath I stood, dropped my pants, and slapped my heavy cock against her wet slit. "You want this dick? Tell me."
"Shove it in me," she begged. "Fuck your sister raw like in those stories."
I thrust balls-deep in one stroke. Her pussy gripped me like a fist, hot and dripping. I pounded her hard, the bed creaking, skin slapping loud. "Take it," I grunted. "Take big brother's cock. Gonna fill this cunt up."
Jenna wrapped her legs around me and met every thrust. "Harder! Fuck me like you own me. Cum inside your sister."
We switched positions fast—her on all fours, me behind her, yanking her hair while I drilled her from behind. Her ass rippled with every slam. I reached under and rubbed her clit until she squirted, soaking the sheets. Then I flipped her onto her back, legs over my shoulders, and jackhammered deep. Her tits bounced, mouth open in a silent scream as another orgasm ripped through her.
"Here it comes," I warned, balls tightening. "Gonna breed that sister pussy."
"Fill me up," she cried. "Pump every drop in me."
I exploded, thick ropes of cum flooding her spasming cunt. We kept fucking through it, my load leaking out around my shaft, making everything sloppy and filthy. I pulled out and fed her my cock, letting her taste our mixed juices while she sucked me clean.
We didn't stop there. Round two had her riding me reverse cowgirl, ass bouncing while I spread her cheeks and watched my cum-slick dick disappear into her. Round three was slow and nasty on the floor, her legs pinned wide as I ground deep and whispered every dirty thing from those sites.
By morning we were a sweaty, cum-drenched mess, already planning to log into the best incest sex fiction story sites together and act out the next chapter for real. No more reading. Just nonstop, raw family fucking.
