The apartment was quiet except for the low hum of the TV. I sat on the couch in just my boxers, the remote in my hand, when my sister Emma walked in from the kitchen. She was twenty-two, same as me, wearing nothing but one of my old T-shirts that barely covered her ass. Her nipples pushed hard against the thin fabric.
"Found something good?" she asked, dropping down right next to me, thigh pressed against mine.
"Some old home movie shit," I said. "Looks dirty as hell."
I hit play. On screen two siblings, clearly adults, started making out on a similar couch. The guy yanked his sister's top off and sucked her tits like he was starving. Emma shifted closer. Her hand landed on my leg.
"Fuck, that's hot," she whispered.
My cock started swelling fast. Emma noticed. She slid her hand up and squeezed me through the boxers.
"Already hard for your sister?" she teased, voice low and dirty.
I grabbed the back of her neck and pulled her in. Our mouths crashed together, tongues fighting. She tasted like the beer she'd been drinking. I shoved the T-shirt up and palmed her bare tits, pinching her nipples until she moaned into my mouth.
On the TV the brother was fingering his sister now, her legs spread wide. Emma broke the kiss, stood up, and peeled the shirt off. She was completely naked underneath. She climbed onto my lap, straddling me, and ground her wet pussy against my hard dick through the thin cotton.
"Take it out," she ordered.
I shoved my boxers down. My cock sprang free, thick and leaking. Emma wrapped her fingers around it and rubbed the head up and down her slit, coating me in her juices.
"God, I've wanted this all week," she said, then sank down in one smooth motion.
Her tight cunt swallowed every inch. We both groaned loud. She started riding me hard, tits bouncing, ass slapping against my thighs. I gripped her hips and thrust up to meet her, burying myself balls-deep each time.
The movie played in the background, the on-screen siblings fucking just as rough. Emma leaned forward and sucked on my neck, biting down when I reached between us and rubbed her clit.
"Fuck me harder, big brother," she panted. "Make me come on this cock."
I flipped her onto her back on the couch, hooked her legs over my shoulders, and pounded into her. The wet sounds of her pussy filled the room. She clawed at my back, screaming my name as she came, her walls pulsing and squeezing me tight.
I didn't stop. I flipped her again, put her on all fours, and slammed back inside from behind. One hand fisted her hair, the other slapped her ass red while I fucked her like I owned it. The movie kept going, the siblings switching positions on screen, but we didn't need it anymore.
Emma reached back and spread her ass for me. "Deeper. Fill your sister's cunt."
I drove in balls-deep and unloaded, pumping thick ropes of cum straight into her. She pushed back, milking every drop, then collapsed forward with me still buried inside her.
We lay there catching our breath, the movie still flickering. Emma turned her head and grinned.
"Round two after this scene?" she asked.
I was already getting hard again inside her. "Yeah.
And we're filming our own next time."
