Mac had a fantasy of using a urethral sound to intensify his orgasm, and I got him to let us watch as he finally lived it out for the first time. He was nervous but excited, with his secret kink on display, as he awaited my signal to begin. He took the sound in very, very slowly, and surprisingly his cock got hard. Mac described the experience for us as he did it, saying it felt weird but not painful, and that it was actually pleasurable as he pulled it out. I got him to slowly fuck his pee hole, in and out, and cum started to drip out around the sound and down his hard shaft.