Sister Gets Raped Below While I Rub My Wet Pussy in Secret

The floorboards creaked violently as my stepbro pounded my sister beneath me, the wet slap of skin on skin echoing up through the ceiling. I lay on my bed, fingers buried deep in my soaking shaved pussy, watching my clit swell with every thrust from downstairs. The air smelled thick of musk and sex, a salty tang that made my breath hitch. "Fuck me harder!" I whispered to myself, mimicking the desperate cries drifting up. My stepbro's grunts were raw, aggressive, as he drove his big cock deep into her tight hole. I squeezed my thigh muscles tight, feeling the heat radiate between my legs. "Take my cock deep!" I moaned aloud, rubbing faster, imagining his thick length inside me instead of her. The sound of his hips slamming against her ass was a rhythmic torture. I could almost taste the sex in the air, a metallic sweetness that made me gag slightly. "Cum inside me!" I screamed, my hand jerking wildly as I felt the pressure building. The vibration of their rough fucking traveled up my spine, making my toes curl. I wanted to join them, to feel that same brutal pleasure tearing me apart. It was a twisted family secret, a hidden desire blooming in the silence of my room while chaos erupted below. My fingers slicked with lube as I pushed them deeper, craving the friction. The scene was pure ecstasy, a forbidden thrill that made my heart race like a drum.