I stood in the doorway of our bedroom, heart pounding, watching my brother Mike slam his thick cock into my best friend Lisa. She was bent over the bed, ass up, moaning like a whore while he gripped her hips and pounded her from behind. "Take it, slut," he growled, his balls slapping against her. I was already dripping down my thighs, my fingers shoved inside my own cunt because that's what I did now. I got off watching my own brother fuck other women.
"Fuck her harder, Mike," I said, voice raw. "Show her what that incest cock can do."
He glanced back at me with that smirk that always made my stomach twist. "You love this shit, don't you, sis? Watching your brother wreck a pussy that isn't yours."
Lisa laughed breathlessly between thrusts. "She's such a pathetic cuckquean. Look at her fingering herself."
I crawled closer on the floor, knees scraping the carpet, eyes locked on where his cock stretched Lisa open. Every time he pulled back I saw her juices coating him, shiny and thick. My own brother. The same cock that had been inside me last night was buried in my friend now, and it made me clench around my fingers so hard I almost came right there.
Mike reached down and yanked Lisa's hair. "Tell my sister how good it feels."
"So fucking good," Lisa panted. "Better than anything she's ever given you. Your brother's dick is ruining me."
I whimpered and shoved three fingers deeper. "Don't stop. Fill her up. I want to see it leak out of her."
He flipped Lisa onto her back, spread her legs wide, and drove back in. Her tits bounced with every brutal thrust.
Mike looked straight at me while he fucked her. "You want to clean this up later, don't you? Lick my cum out of her used hole like the incest slut you are."
"Yes," I gasped. "Please. I'll do it. Just don't stop."
Lisa came first, screaming, her pussy clamping around him. Mike grunted and buried himself to the hilt, pumping load after load deep inside her. I could see his balls tighten, his ass flexing as he emptied every drop. When he finally pulled out, thick white cum immediately started dripping from Lisa's swollen cunt.
I didn't wait for permission. I crawled between her legs and dragged my tongue through the mess. Salty, hot, mixed with her juices. Mike's cum. My brother's cum. I licked it all up while Lisa held my head down and Mike stroked his still-hard cock above us.
"Swallow it, sis," he ordered. "Every fucking drop."
I did. Then I sucked his cock clean, tasting both of them on my tongue. Lisa watched, smirking. "She's addicted. Your own sister can't get enough of being your cuckquean."
Mike pulled me up by the hair and bent me over the bed next to Lisa. He shoved two fingers into my soaked pussy. "You think you deserve this cock now? After watching me breed your friend?"
"No," I moaned, pushing back against his hand. "I don't deserve it. Just let me watch again. Let me watch you fuck her all night."
He laughed, low and dirty, and slapped my ass hard enough to sting. "That's my good little incest cuckquean."
Lisa rolled over and spread her legs again. Mike lined up behind her once more, already hard, and sank back inside her with a wet sound. I stayed right there on my knees, face inches from where they were joined, licking whatever I could reach while he fucked her for the second time.
This was my life now. My brother owned both of us, and I got wetter every time he reminded me I was nothing but the audience for his cock. And I wouldn't have it any other way.
