It started with my sister Lisa bending over the kitchen table in nothing but heels, her ass up, and Dad's hand cracking down hard on it. "Fuck yes, Daddy, spank that pussy too," she moaned, spreading her legs wider so we could all see how wet she was. Mom was already on her knees in front of me, sucking my cock like she had been starving for it, her tongue swirling around the head while her fingers worked my balls. "That's it, baby, give Mommy that thick dick," she growled between slurps, spit running down her chin.
We had talked about it for weeks after the last family vacation turned into heavy flirting and stolen touches. Everyone was over 25, all consenting adults, and the rules were simple: no holding back, raw and nasty, everyone gets used. My brother Jake had his cock buried in Mom's ass from behind while she blew me, pounding her with wet slaps that echoed through the house. "Take it, you dirty bitch," he grunted, yanking her hair. Mom just moaned louder around my shaft, her throat squeezing me.
Lisa climbed onto the table and crawled toward me on all fours, her big tits swinging. "Come fuck your sister's cunt while Dad watches," she said, voice low and filthy. I pulled out of Mom's mouth and slammed into Lisa's dripping hole in one thrust. She was tight and hot, gripping me as I fucked her hard, the table shaking under us. Dad moved behind me, pressing his lubed cock against my ass. "You ready to get fucked while you fuck your sister?" he asked, voice rough. I nodded, pushing back, and he slid in deep, stretching me open while I kept pounding Lisa.
Mom wasn't left out. She straddled Lisa's face and ground her pussy down, riding my sister's tongue. Jake stood over them, jerking his cock and slapping it against Mom's tits, leaving strings of precum. "Suck your brother's dick, Mom," he ordered. She leaned forward and took him in, gagging as he fucked her throat. The room filled with the sounds of skin slapping, wet sucking, and everyone cursing and begging.
We switched around for hours. I fucked Mom's ass while Jake took Lisa's mouth. Dad tied Lisa's wrists with his belt and made her watch while he fucked me again, calling me his "good boy slut." Mom sat on Lisa's face and squirted when she came, soaking the sheets we had spread on the floor.

Lisa begged for double penetration, so Jake and I took turns stretching her pussy and ass at the same time, our cocks rubbing together inside her while she screamed and came hard.
By the end we were all covered in sweat, cum, and lube. Mom lay back with her legs spread, Dad's load leaking out of her while Lisa licked it up. Jake and I finished on their faces, thick ropes painting their tongues and tits. We collapsed in a pile, breathing hard, already talking about next weekend and what new kinky shit we would try. No shame, just raw family lust that we all craved.