Sophia's story book of choice tonight is There's Going to be a Baby. I take the opportunity during the reading for a little preschool-level sex ed and point at the drawing of a boy standing naked in a tub:
Me: Is that a boy or a girl?
S: That's a boy.
Me: How do you know?
S: He has a peanut.
Me: Uh, it's a penis, not a peanut.
S: Peeenisss....
Laura: I like "peanut" better.