Delve into the taboo world of urethral sounding as our adventurous model, Dick, explores the limits of his anatomy. With a careful, lubed-up hand, he inserts a thin, curved metal sound into the opening of his urethra, gasping at the intense, unfamiliar sensations. The sound glides smoothly along his urethral passage, sending shivers down his spine as it reaches his bladder. He moans in pleasure, the sound's curve pressing against his prostate, igniting waves of ecstasy.