Urethralsound, a hardcore amateur, indulges in a solo urethral masturbation session. His white cock stands at attention, ready for the vibrating probe. With a mischievous grin, he coats the toy in lube and pushes it into his urethra, gasping at the initial shock of pleasure. He strokes his dick, feeling the vibrations from the toy intensify his arousal. His balls tighten as he edges closer to climax, his cockhead leaking pre-cum, ready to explode in a solo dick plunge finale.