In the dimly lit room, a lone figure, average in build, takes center stage. His average cock, hard and throbbing, awaits its dark fate. He lubes up a metal urethral sound, its tip glinting menacingly under the harsh light. With a steady hand, he guides it into his piss slit, pushing past the resistance, drawing a gasp from his lips. He works it in and out, fucking his dick hole, eyes rolled back in a mix of pain and pleasure. The sound disappears inside, inch by inch, as he chases his kinky high.