The voyeur's heart races, palms sweating as he watches the young man's solo performance. Every thrust of his hand, every twitch of his cock sends a jolt through the hidden observer. The room is filled with the scent of sex, the sound of wet flesh slapping against flesh. The voyeur's own cock strains against his pants, leaking pre-cum as he watches the young man's body tense, his breath hitch, and his cock pulse in release, a fountain of cum spilling onto the floor. The voyeur, breathless and spent, steps back, leaving the young man to his post-orgasm glow, unseen and unknowing.