Many, many months ago, The Frog started using the word "butt" and I told him that "bum" or "bottom" are nicer words for that. (little does he know, he could do a lot worse than "butt"... Heaven help me when he discovers that!) Last week, out of the blue, he says to me:
The Frog: "Mom, do you wanna know a nicer word for bum?"
The Frog: "Booty. Isn't that a really nice one?"