With a pounding heart, I remained concealed, my eyes feasting on the forbidden sight. My stepsister, a thick, juicy girl, was masturbating furiously, her big ass bouncing as she impaled herself on her oversized dildo. She was a vision of pure, unadulterated lust, her shaved pussy taking every inch of the toy, her moans filling the room as she chased her orgasm. Little did she know, she was being watched, her private moment stolen by my hidden gaze.