I walked into the living room after midnight and found my mom, dad, sister, and brother already naked on the big sectional couch. Mom's tits were out, heavy and swinging as she stroked my brother's thick cock. Dad had two fingers buried in my sister's shaved pussy while she moaned and sucked on his balls. They all looked up when I came in, no surprise on their faces, just hungry smiles.
"Finally," Mom said, voice low and rough. "Get those clothes off and join us, baby. We've been waiting for you."
I stripped fast, my dick already hard and leaking. My sister crawled over on all fours, grabbed my shaft, and swallowed me to the root in one sloppy gulp. Her tongue worked the underside while she gagged on it, spit running down my balls. Dad moved behind her, lined up, and shoved his cock straight into her cunt. She moaned around my dick, the vibration making my knees shake.
Mom pulled me down onto the couch and straddled my face. Her wet pussy pressed against my mouth and I licked her like I was starving, sucking on her clit while she ground down. My brother knelt beside us and fed his cock into Mom's mouth. She took it deep, cheeks hollowing, while she rode my tongue.
We switched fast and dirty. I got behind my sister and slammed into her from behind. She was tight and dripping, pushing back hard against every thrust. Dad moved to Mom, bent her over the arm of the couch, and fucked her ass while she screamed into the cushion. My brother lay under my sister, sucking her tits and fingering her clit while I pounded her pussy.
"Harder," my sister begged. "Fuck your sister like you mean it."
I grabbed her hips and gave it to her, balls slapping against her. Mom crawled over and kissed me, tongue tasting her own cunt on my lips. She reached down and stroked my cock as it slid in and out of my sister's hole.
We moved to the floor. Mom on her back, legs spread wide. I slid into her first, her pussy hotter and wetter than I remembered from the last time we snuck around. My sister sat on Mom's face while Dad fucked my sister's mouth. My brother got behind me, pressed his cock against my ass, and pushed in slow. The stretch burned then turned into pure heat as he started thrusting, driving me deeper into Mom with every stroke.
The room filled with wet sounds, skin slapping, grunts and filthy talk.
"Fill Mom's cunt," my sister ordered. "Breed her like the family slut she is."
I came first, pumping thick ropes into Mom while my brother kept fucking my ass. He pulled out and shot across my back. Dad pulled out of my sister's throat and painted her face. Mom came hard on my cock, squirting around me, soaking the rug.
We didn't stop. My sister rode my face next while Mom sucked me back to hardness. Dad fucked my brother while my brother ate Mom's ass. We kept trading holes, switching partners, no one left out. My sister took two cocks at once, one in her pussy and one in her ass, screaming through it. Mom got on all fours and took my brother and me at the same time, one in each end, while Dad fucked her tits.
Hours later we were all slick with sweat and cum, bodies tangled on the floor. Mom kissed me slow and deep, then turned and kissed my sister the same way. Dad clapped my shoulder. My brother just grinned, already half-hard again.
"Same time next week?" Mom asked, wiping cum from her chin with her fingers and licking them clean.
We all nodded. The night wasn't over yet.
