Alone in his dimly lit room, a man teases his body with electrostim, his muscles twitching and contracting as waves of pleasure and pain course through him. He's a master of self-denial, prolonging his agony, building the tension. His cock throbs, leaking pre-cum, desperate for release. But he holds out, determined to reach the peak of his endurance. Finally, he can't take it anymore. His body convulses, and he erupts, painting the room with his hot cum, all without a single touch from his hands.