I never planned any of it. It just happened one hot summer weekend when the whole family crammed into my parents' big house for a reunion.
My sister Jenna had always been the one with the massive, round ass that jiggled when she walked, thick and juicy like it was made for grabbing. Mom's was just as fat and heavy, wide hips that swayed and cheeks that clapped when she bent over. Aunt Lisa showed up with an even bigger one, soft and bouncy, stretching every pair of shorts she owned. And Grandma Ruth, at sixty-eight but still thick as hell, had the kind of huge, sagging-yet-plump booty that looked obscene in her house dresses.
It started with Jenna. She caught me staring in the kitchen while she reached for a glass, her shorts riding up between those massive cheeks. "You like this big ass, little brother?" she whispered, backing up until my hard cock pressed right between them. I didn't answer with words. I just yanked her shorts down and buried my face in that fat, sweaty crack, tongue licking from her tight hole up to her dripping pussy. Jenna moaned loud, pushing back, riding my face while I slapped those cheeks red. "Fuck, eat your sister's big booty," she hissed. I stood up, dropped my pants, and slammed my cock straight into her soaked cunt. Her ass rippled with every thrust, the sound of skin slapping filling the kitchen. I came deep inside her, pumping load after load while she begged for more.
Mom walked in right after, but instead of freaking out she just locked the door and pulled her own shorts off. Her ass was even thicker, pale and dimpled, the kind that jiggled for seconds after a slap. "If you're fucking your sister, you're fucking me too," she said, bending over the counter. I was still hard. I shoved into Mom's pussy next, grabbing handfuls of that huge ass while Jenna watched and fingered herself. Mom's cheeks spread wide around my cock, her hole winking every time I bottomed out. "Harder, baby, wreck Mommy's big booty," she grunted. I pounded her until she squirted down her thighs, then pulled out and pushed into her ass. It was tight and hot, gripping me like a fist. I fucked her asshole raw until I filled it up.
Aunt Lisa heard the noise and joined without a word. Her booty was the biggest, dark and shiny, heavy enough to smother a face. She dropped to her knees and sucked my cock clean of Mom and Jenna's juices, then turned around and spread her cheeks. "Auntie's turn. Fuck this fat ass." I slid into her pussy first, then switched to her asshole, watching those massive globes bounce and clap around my shaft. Jenna and Mom took turns sitting on my face, smothering me with their big booties while I licked their holes and came again deep in Aunt Lisa's guts.
By nightfall Grandma Ruth had figured it out. She didn't say much, just lifted her dress in the living room and showed us that enormous, wrinkled-yet-plump ass. "Come on, boy. Grandma's got the biggest one here." I was exhausted but rock hard again. I ate her ass first, tongue deep in that mature hole while the others watched and played with each other. Then I fucked Grandma from behind, her huge cheeks swallowing my cock, the sound wet and filthy. She moaned like a whore, pushing back, telling me to breed her old ass. I came so hard my legs shook, pumping everything I had left into her.
We didn't stop all weekend. Every combination happened. Jenna riding my face while Mom and Aunt Lisa took turns on my cock. Grandma sitting on my dick with her massive ass smothering my lap while the others licked wherever they could reach. Loads went into pussies, asses, and mouths. Big booties got slapped, spread, and fucked until everyone was sore and leaking cum. By Sunday night we were all wrecked, but already planning the next family get-together.
