I was eighteen when my older brother caught me. Eighteen, legal, and already deep into it. The pink panties were stretched tight over my cock, the matching bra pinching my nipples, and I was bent over my bed practicing my walk in heels when the door swung open. No knock. Just Jake standing there, six-foot-two of solid muscle and that smirk that said he owned the room.
"Look at this shit," he said, voice low and rough. His eyes dragged over my shaved legs, the lace digging into my ass. "My little brother dressed like a cheap sissy whore. Mom would lose her fucking mind."
I froze, face burning, but my dick twitched hard against the satin. Jake stepped inside and shut the door. Locked it.
"Turn around. Let me see what you've got."
I did. Slow. The panties were already damp at the front from precum. Jake laughed once, short and dirty.
"Hard as fuck. You like this. You want someone to treat you like the girl you are."
He grabbed my chin, forced me to look at him. "Say it. Say you're my sissy."
"I'm your sissy," I whispered.
"Louder."
"I'm your sissy, Jake."
He shoved me onto my knees. The carpet burned. His belt clinked open and his thick cock slapped my cheek, already half-hard and veiny.
"Open that pretty mouth. Show me how a sissy sucks cock in this family."
I took him deep on the first try, gagging when he grabbed my hair and fucked my throat. Spit ran down my chin onto the bra. He tasted like sweat and precum and I moaned around him, the sound slutty and broken. Jake grunted, hips snapping.
"Look at you. My little brother on his knees in panties, choking on dick. Bet you've been dreaming about this. Bet you jerk off thinking about me using that ass."
He pulled out, strings of spit connecting my lips to his cock. Dragged me up, spun me around, and yanked the panties aside. Two fingers shoved straight into my hole, dry at first, then he spat and worked them in rough.
"Tight little sissy cunt. Gonna stretch it open."
I whimpered, pushing back. He added a third finger, scissoring me open while his other hand reached around and squeezed my balls through the lace.
"Please, Jake. Fuck me. Make me your girl."
He didn't answer with words. Just lined up and drove in. One hard thrust and he was balls-deep in my ass, the burn perfect, the fullness making my own cock leak into the panties. He fucked me like he hated me, hips slapping loud, one hand fisted in my hair, the other reaching under to pinch my nipple through the bra.
"Take it, sissy. Take your brother's cock. This is what you were made for."
Every thrust pushed me up the bed. The panties stayed on, stretched around one thigh, rubbing my balls with every slam. Jake leaned over me, breath hot on my ear.
"Next time I'm bringing Mom's dildo. Gonna double-stuff this hole while you wear her nightgown. Whole family's gonna know what a slut you are."
The words pushed me over. I came untouched, pulsing into the panties, ass clenching around him. Jake growled, buried deep, and flooded me. Hot, thick ropes filling my guts while he kept grinding, milking every drop.
He pulled out slow. Cum leaked down my thigh. He wiped his cock on the panties, then pulled them back into place so the mess stayed trapped against my skin.
"Clean me up."
I turned, licked him soft, tasting my ass and his cum mixed together. Jake watched with that same smirk.
"Good girl. Same time tomorrow. And leave the door unlocked."
He left. I stayed on the floor, panties soaked, hole throbbing, already hard again thinking about what he'd do next. The family secret was out, and it was only getting dirtier from here.