The cabin door slammed shut behind me and my three brothers were already on me. Jake, the oldest, grabbed my tits through my tank top and squeezed hard. "Strip, sis. Dad said you're the family slut tonight."
I dropped my shorts and panties right there in the living room. My pussy was already wet from the drive up, thinking about exactly this. Mark and Tyler circled me, cocks out, stroking. Dad sat in the big chair, pants open, thick dick in his hand.
"Get on your knees, baby girl," Dad ordered. I did. Jake shoved his cock in my mouth first. I sucked him sloppy, drool running down my chin while Mark slapped his dick against my cheek. Tyler pushed two fingers straight into my cunt from behind, pumping fast. "Fuck, she's dripping already."
They didn't waste time. Jake pulled out and bent me over the couch. He rammed his cock into my pussy in one thrust. I moaned loud as he started pounding. Mark fed his dick into my mouth again while Tyler jerked off watching. Dad stood up and came over, rubbing the head of his cock on my lips too.
"Take it all, slut," Jake grunted, slamming into me. My tits swung under me with every thrust. Mark pulled out and slapped my face with his wet cock. "Open wider." I did, and both he and Dad pushed their cocks against my tongue at the same time. I licked and sucked what I could while Jake fucked me raw.
They switched fast. Tyler took Jake's place and fucked me even harder, hands gripping my hips. Mark got behind me too and pressed his cock against my asshole. "Gonna stretch this tight hole." He spit on it and pushed in. I cried out around Dad's cock as my ass opened up. Double penetration hit me quick and dirty, two thick dicks filling both holes.
Dad pulled out of my mouth and sat back down. "Ride me, sweetheart." They dragged me over. I straddled Dad's lap and sank down on his cock. Tyler moved in front and shoved his dick back in my mouth. Jake and Mark stood on either side, feeding me their cocks in turns. I bounced on Dad while sucking and stroking the others. Cum and spit coated my face and tits.
Jake pulled me off Dad and laid me on the floor on my back. He lifted my legs and fucked my pussy deep. Mark straddled my chest and tit-fucked me, his cock sliding between my spit-slick tits. Tyler knelt by my head and fucked my mouth again. Dad watched, stroking slow.

"Look at our little whore taking every cock in the family."
They kept rotating. Someone always in my pussy, someone in my mouth, someone using my hands or tits. Mark came first, shooting thick ropes across my face and open mouth. I swallowed what I could. Tyler followed, pulling out and painting my tits. Jake flipped me onto all fours again and fucked my ass until he filled it, cum leaking out when he pulled free.
Dad took his turn last. He laid me on the couch and fucked my pussy slow and deep while the others watched, cocks half-hard again. "You love this family gangbang, don't you?" he growled. I nodded, moaning. He sped up, balls slapping my ass, until he pumped his load deep inside me.
We stayed tangled on the floor and furniture, breathing hard, cum everywhere. Jake wiped some off my chin and fed it to me. "Round two after we eat," Dad said, already getting hard again. I smiled, legs spread, ready for more.