The virus hit without warning, a strange flu that swept through the city and left everyone horny as hell for their own blood. I was 25 when it reached our house, living with my parents and my 22-year-old sister after college fell apart. Mom was 48, still hot with those heavy tits and wide hips, and Dad was 50, built like a bull. The news called it the "incest virus," some airborne bug that rewired your brain so family members smelled like pure sex. We tried to ignore it at first, but the urges hit hard and fast.
One night I caught Mom in the kitchen, her robe hanging open, nipples stiff and her hand already between her legs. "Fuck, son, I can't stop thinking about your cock," she growled, voice raw. I was hard instantly, dick straining against my shorts. She dropped to her knees right there on the tile, yanking my pants down and swallowing me deep. Her mouth was hot and wet, tongue working the underside while she moaned like a whore. I grabbed her hair and fucked her face, balls slapping her chin as spit ran down her neck. She gagged but kept going until I blew my load straight down her throat, thick ropes she gulped like it was the best meal ever.
Dad walked in mid-blowjob and didn't even blink. He just pulled his own cock out and started stroking. "Your mom's cunt is mine tonight," he said, voice low and dirty. Mom stood up, bent over the counter, and spread her ass cheeks. "Both of you, use me." Dad slammed into her pussy from behind while I shoved my still-hard dick back into her mouth. We spit-roasted her like that, the kitchen filling with the wet sounds of fucking and her muffled screams. Her tits swung under her as Dad pounded her, his balls smacking her clit with every thrust. I came again, painting her face, and Dad followed, flooding her hole until cum leaked down her thighs.
My sister Lisa walked in on us the next morning. She was fresh from the shower, towel barely covering her perky ass and small tits. The virus had her eyes glazed with lust. "I heard you guys last night. I need it too." She dropped the towel and climbed onto the table, legs spread wide. "Eat my pussy, big brother." I buried my face between her thighs, tongue lapping at her shaved slit, tasting how soaked she already was. She grabbed my hair and ground against my mouth while Mom and Dad watched, fingering each other. Dad bent Mom over the couch and fucked her again, slow and deep, telling her what a nasty mom she was for wanting her son's dick.
Lisa came hard on my tongue, squirting a little onto my chin. Then she pulled me up and guided my cock into her tight cunt. "Fuck me raw," she begged. I slammed into her, the table rocking as I pounded her pussy, her walls gripping me like a vice. Mom crawled over and started sucking Lisa's nipples, biting them just hard enough to make her scream. Dad moved behind me and pressed his lubed finger against my ass. "Relax, boy. Time you learned how it feels." He worked two fingers in, then replaced them with his thick cock, stretching my hole while I kept railing my sister. The double sensation had me seeing stars. I filled Lisa's pussy with cum just as Dad unloaded in my ass, hot and deep.
We spent the whole week like that, the virus turning every room into a fuck den. Mom rode my face while Lisa sucked Dad's cock, then we switched, Dad fucking Lisa's ass while I took Mom's. Cum was everywhere: on faces, in holes, dripping on the floors. The dirty talk never stopped. "Breed your sister," Mom would hiss. "Fill Mommy's cunt with that big dick." We didn't leave the house, just fucked and ate and fucked again, bodies slick with sweat and cum.
By the end of the month the virus burned out, but the habit stuck. We kept going, raw and filthy, one big family that couldn't stop craving each other. The sex stayed intense, direct, no shame left.
Mom still drops to her knees when she wants a load, Lisa begs for double penetration, and Dad and I trade off who gets fucked in the ass that night. The virus gave us this, and we never looked back.
