In the dimly lit bedroom, a lone figure, Guy, lies on his back, his hard cock throbbing with anticipation. He lubes up a sleek, curved metal sound designed for urethral stimulation. With a deep breath, he inserts the tip into his piss slit, gasping at the intense sensation. He pushes it deeper, inch by inch, until he hits his prostate. His body jerks as waves of pleasure course through him. He begins to slowly fuck himself with the sound, his breath coming in short gasps. The sight of the metal disappearing into his cock is almost too much to bear. He grabs his cock, stroking it in time with the thrusts of the sound. His balls tighten, and with a final, deep thrust, he comes hard, his cum splattering onto his abs.