Knocken's booth is a secret world of intense, gay pleasure. He's hidden, yet exposed, the thin walls and unlocked door a thrilling tease. His cock is a rigid, leaking beast, aching for release. He jerks it roughly, the sound of his hand slapping flesh echoing in the tiny space. His balls tighten, his breath hitches, and then he's coming, his cock pulsing, his cum coating the booth's interior, a testament to his public, exhibitionist jerk-off.