What do you do when......

You send your child into the bathroom to do his business, and from down the hall you hear him yell.... "I CAN'T FIND MY PENIS!" What do you think you do? Laugh until you almost pee your pants!!! (Yes, this was Tustin! We never could figure out what he meant though... when I got to the bathroom, he was peeing and said "I just trickin' ya Mommy.")