His Highness is learning about the parts of the body. Today, in the bath--
Cat Daddy: "Your Highness, where's your bellybutton?"
HH: points first to his boy-parts (yes, we use the proper terms when warranted), then to his bellybutton
CD: "Where's your boo-boo?"
HH: points to his knee, which lately seems perpetually skinned.
CD: "Where are your boobies?"
HH: points to his boobies
Me: "You taught him 'boobies'?"
CD: "What else would we call them?"