Cramps

Brother 2 walks out of the bathroom: Owwww.... I've got a cramp!!! I peed too fast!!

Me: Uh... Wait... you can't get cramps from peeing! Where do you have a cramp? In your leg or something?

Brother 2: You can definitely get cramps from peeing too fast, or for too long. Right in the spot between your penis and your balls.