In the quiet of his room, a man's curiosity leads him to a taboo pleasure. A gleaming metal sound lies on the bed, a promise of intense sensation. He lubes up, his hands steady despite his racing heart. The tip of the sound presses against his urethra, and with a deep breath, he pushes. Inch by inch, the metal fills him, his body responding with waves of pleasure and discomfort. He groans, his hand wrapped around his stiff cock, stroking in time with the sound's movement. The pressure builds, his body tensing, his breath coming in short gasps. With a final, hard thrust, he comes, his body shaking with the force of his orgasm, his cock pulsing as he spills over his hand.