A lone figure, Extremboy51, sets up his camera in a dimly lit room, the air thick with anticipation. He lubes up his hard cock, the scent of musk filling the space. With a steady hand, he inserts a small urethral Sounds, gasping at the intense sensation. He works it in, his body tensing as he takes it deeper. He switches to a larger Sounds, his face contorting with pleasure and pain. His balls draw up as he nears the edge, but he holds back, savoring the taboo sensation of urethral penetration.