In the privacy of his room, a man indulges in a solo masturbation session with his penis milking machine. The cow-like device hums to life, its vacuum-powered pulsations teasing and tantalizing his rigid shaft. He grips the machine, his hips bucking as he fucks it, his pre-cum lubricating the silicone interior. With a final, intense surge, he releases his load, the machine milking him dry.