In the heat of the moment, a man loses himself in the rhythm of his strokes, his grunts filling the room. Suddenly, a soft gasp breaks his trance. A lady stands at the door, her eyes wide with surprise and something else - curiosity. She steps in, closing the door softly behind her, her gaze never leaving his cock as he resumes his solo dance, now aware of her presence, his wank taking on a new, voyeuristic twist.