The house was too quiet after midnight. Rain hammered the roof while the old AC unit rattled in the window. I was eighteen, home from my first year at college, and I should have been asleep. Instead I stood in the hallway listening to the low, ugly sounds coming from my parents’ bedroom.
Dad had Mom bent over the edge of the bed. Her nightgown was shoved up to her waist. He was fucking her hard, one hand fisted in her hair, the other gripping her hip hard enough to leave marks. She wasn’t making the noises she usually made when they thought I couldn’t hear. These were raw, broken sounds.
“Shut the fuck up,” Dad growled. “You wanted this. You’ve always wanted this.”
I should have walked away. Instead I stepped closer. The door was open a few inches. I could see everything.
Mom’s eyes found mine through the gap. They were wide, wet, and she didn’t look away. Dad noticed the shift in her attention and turned his head.
“Get in here, boy,” he said, voice thick. “Door’s open for a reason.”
My feet moved before my brain caught up. I pushed the door wider. Mom tried to straighten up but Dad shoved her back down.
“Stay,” he ordered her. Then to me: “Pants off. Now.”
I was hard. Shame burned through me but my cock didn’t care. I shoved my sweats down. Dad looked at my erection and gave a short, ugly laugh.
“Figures. Get over here. She’s wet enough for both of us.”
He pulled out of her. Mom’s cunt was swollen, glistening. She made a small sound of protest that turned into a gasp when Dad pushed two thick fingers inside her and spread her open.
“On the bed,” he told me. “On your back.”
I climbed up. The sheets were damp. Dad grabbed Mom by the hair and dragged her over me. She ended up straddling my hips, Dad’s hand still in her hair forcing her face close to mine.
“Sit on your brother’s cock,” he said.
Mom shook her head once. Dad’s free hand cracked across her ass hard enough to make her jolt.
“Do it or I’ll make it hurt more.”
She reached down with a shaking hand and lined me up. The head of my cock slid through her slick folds and then she sank down. Tight, hot, wrong. I groaned. She whimpered.
Dad moved behind her. I felt the blunt press of him against her already full cunt.
“Relax,” he muttered, and pushed.

Mom cried out as he forced his way in alongside me. The stretch was brutal. Her walls clenched around both of us. Dad bottomed out with a grunt and started thrusting, using short, vicious strokes that shoved me deeper every time.
“Fuck,” I gasped. Mom’s tits swung above my face. I grabbed them, sucked a nipple into my mouth without thinking. She made a broken sound that might have been my name.
Dad’s rhythm got rougher. “That’s it. Take it. Both of you. This is what you get for being in this house.”
Mom came first. Her cunt fluttered and pulsed around us, milking us both. The feeling dragged me over the edge. I came hard, pumping up into her while Dad kept fucking, using my cum as extra lube. He lasted another minute before he growled and unloaded inside her too.
We stayed locked together, breathing hard. Dad pulled out first. Cum and slick dripped down Mom’s thighs onto my stomach. He slapped her ass once more, almost affectionately.
“Clean him up,” he told her.
She slid off me and lowered her mouth without argument. Her tongue was warm and thorough. Dad watched, stroking himself back to hardness.
“Round two,” he said. “This time I want her ass.”
Mom made a small, defeated noise against my cock but didn’t stop sucking.
Outside the rain kept falling. Inside the house the only sounds were wet and filthy and inevitable. We weren’t finished. We wouldn’t be for a long time.