The secret observer's heart races as the masseuse's hands slip lower, teasing the client's throbbing erection through the thin fabric of his towel. The client's moans fill the room, echoing the voyeur's own stifled groans. The masseuse, sensing the tension, leans in to whisper in the client's ear, her tongue flicking out to lick his earlobe. The hidden watcher's palms grow slick with sweat, imagining the masseuse's tongue tracing the same path down the client's body, her hands replacing the towel, her mouth engulfing his hardness.