I shoved my sister against the bedroom door the second Mom left for work. "You been thinking about this all week, haven't you, you filthy little slut?" I growled, yanking her tank top up and over her head. Her tits spilled out, nipples already hard. She moaned and nodded, reaching for my belt.
"Shut up and fuck my throat," she hissed, dropping to her knees right there on the carpet. "I want that big strap down my throat until I can't breathe."
I kicked my jeans off and buckled the harness around my hips. The thick, veiny dildo jutted out, already slick from the lube I'd rubbed on it. My sister didn't wait. She grabbed my ass with both hands and swallowed the head in one greedy gulp. Her lips stretched wide, spit dripping down her chin immediately.
"Fuck yes, take it deeper," I ordered, fisting her hair. I thrust forward and felt the head pop into her throat. She gagged hard, eyes watering, but she didn't pull back. Her throat convulsed around the shaft like it was trying to milk me. I held her there, counting the seconds while she struggled and drooled.
When I let her up for air she gasped, strings of spit connecting her mouth to the toy. "More," she begged. "Make me choke on my sister's cock."
I slammed back in, fucking her face in short, brutal strokes. Her nose mashed against the harness with every thrust. Gagging sounds filled the room—wet, nasty, perfect. Tears streaked her mascara. She reached between her own legs and rubbed her soaked pussy, fingers sliding noisily over her clit.
I pulled out and slapped the wet dildo across her cheek. "On the bed. On your back. Head hanging off the edge."
She scrambled into position, mouth open, tongue out. I stepped over her and fed the strap straight down her throat again. From this angle I could watch her neck bulge every time I bottomed out. Her tits bounced with each thrust. I reached down and pinched both nipples hard while I deepthroated her.
She came first, thighs shaking, a gush of wetness soaking the sheets. The orgasm made her throat squeeze even tighter around the toy. I kept pumping until she tapped my thigh twice—our signal she needed air.
I pulled out and she coughed, voice hoarse. "Fuck me now. Please. I need my sister's cock in my cunt."
I flipped her onto her stomach, yanked her hips up, and drove the strap into her dripping pussy in one thrust. She screamed into the pillow. I fucked her hard, the base of the harness rubbing my own clit with every stroke. Her ass rippled. I spat on her asshole and worked a finger in while I pounded her.
"Talk dirty," I demanded.
"Your cock feels so good in my cheating sister pussy," she sobbed. "Deeper. Make it hurt."
I added a second finger in her ass and switched to short, grinding strokes that mashed her G-spot. She came again, cunt clenching so hard it almost pushed the toy out. I didn't stop. I kept fucking her through it until she was a shaking, babbling mess.
When I finally pulled out she flipped over and attacked the strap with her mouth again, cleaning her own cream off it. "I want to taste your cum too," she mumbled around the silicone.
I unbuckled the harness, shoved her onto her back, and straddled her face.
Her tongue went straight to my clit while two of her fingers plunged into my cunt. I rode her mouth, grinding down until my thighs trembled. She sucked my clit between her lips and hummed, and I came with a shout, flooding her tongue.
We collapsed in a sweaty heap. She curled against me, kissing my neck. "Again tonight?" she whispered.
"After dinner," I said, already planning how I'd bend her over the kitchen counter while Mom did the dishes in the next room. "And this time I'm bringing the bigger one."
She shivered and smiled against my skin.
