Boy#1, 4 (holding a string cheese stick above his upper lip and wiggling it): "Hey, look -- I have a mustache."
Boy#2, 4 (laughing): "My grandpa has mustaches all over his body. Here...and here...and here..." (pointing to his face, head, chest, crotch, and backside)
Boy #1: "Really?"
Boy#2: "Yep. Covered all over."
Girl, 4: "Even on his booty?"
Boy#2: "Yep. Even on his booty."