Because he's a guy
Scene: Jack, walking around our bedroom grabbing his crotch tonight.
Katherine: Jack, do you have to go pee pee?
Jack: No, mommy.
Katherine: Then why are you holding your penis?
Jack: I like holding my penis.
Disclaimer: The views and opinions expressed in this blog, including strong statements in support of weinerdog-riding monkeys, are our own, and not those of the U.S. Department of State or the U.S. government.