The living room was dark except for the flickering glow of the TV screen. The movie played on, some cheap late-night skin flick with moaning women and thrusting bodies, but neither of them was really watching it anymore. Jake sat on the couch, legs spread, his cock already half-hard from the sounds coming through the speakers. His sister Emily was curled up at the other end, but her hand had slipped under the blanket a few minutes ago and she wasn’t hiding it well.
She was 22, he was 24, both home from college for the weekend with their parents out of town. The movie had started innocent enough, just background noise while they drank beer and talked shit. Then the sex scenes hit and the air changed.
Emily’s fingers moved in slow circles under the blanket. Jake could hear the faint wet sound of her rubbing her pussy. He didn’t look away. “You’re really going for it, huh?” he said, voice low and rough.
She didn’t stop. “Shut up and watch the movie,” she whispered, but her hips rocked a little against her own hand. Her shorts were pushed down just enough for her fingers to work between her legs. Jake’s cock strained against his jeans. He unzipped and pulled it out, stroking slowly while he stared at the way her blanket moved.
The girl on screen was getting fucked hard, her moans filling the room. Emily’s breathing got heavier. She kicked the blanket off, not caring anymore. Her shorts were around one ankle, panties pulled to the side. Jake had a clear view of her fingers sliding through her slick folds, circling her clit, then pushing two fingers into her tight hole.
“Fuck, Em,” he muttered, fist moving faster on his cock. “Look at that wet hole. You’re dripping.”
Emily bit her lip and spread her legs wider, giving him a better show. “You like watching your sister finger herself?” she asked, voice dirty and direct. She pumped her fingers in and out, the wet sounds louder than the movie now. Her other hand pulled her tank top down so she could pinch her nipple.
Jake stood up, cock in hand, and moved closer. He didn’t ask. He just knelt between her legs and replaced her fingers with his own. Emily gasped as two of his thicker fingers pushed into her pussy. “Goddamn, you’re soaked,” he growled, thrusting them deep. Her walls clenched around him. He curled his fingers, rubbing that spot inside her that made her thighs shake.
She reached for his cock and started stroking it in time with his fingers. “Put it in me,” she said. “I want my brother’s cock in this hole.”
Jake didn’t hesitate. He pulled his fingers out, lined up, and shoved his cock into her in one hard thrust. Emily cried out, back arching. He was thick and she was tight, but she took every inch. He started fucking her right there on the couch, the movie still playing behind them, the wet slap of skin on skin mixing with the actors’ moans.
He grabbed her hips and pounded into her, watching his cock disappear into her dripping hole. “This what you wanted? Your brother stretching this slutty pussy?” he grunted.
“Yes—fuck—harder,” she begged. Her fingers found her clit again, rubbing fast while he railed her. Jake leaned down and sucked one of her nipples into his mouth, biting just enough to make her moan louder.
They switched positions fast. He sat back on the couch and she climbed on, sinking down on his cock again. She rode him hard, tits bouncing, pussy gripping him with every drop of her hips. Jake held her ass and thrust up to meet her. “Look at you, riding your brother’s dick like a whore,” he said. “That movie got you this worked up or was it me?”
“Both,” she panted. “Now shut up and make me come.”
He reached between them and rubbed her clit while she bounced.

Her pussy started fluttering around him. She came with a sharp cry, grinding down hard, juices running down his shaft. Jake didn’t stop. He flipped her onto her back on the couch cushions and fucked her through it, chasing his own orgasm.
When he was close he pulled out and stroked his cock over her stomach and tits, shooting thick ropes across her skin. Emily rubbed his cum into her skin with a satisfied smirk, still catching her breath.
The movie credits rolled. Neither of them moved right away. Emily looked at him and grinned. “We’re doing that again tomorrow night.”