Originally Posted by Diego
I didn't realize that you can't pee while erect. But I knew that urine and sperm can't come out at the same time.
you can pee when erect, you cant pee and ejaculate at the ame time though. because when you get close to ejaculation, the flap opens the (for lack of a better word) sperm hole and closes off the (also for lack of a better word) pee hole.