So I'm babysitting a little boy for a friend who's in town for a few days for work. I changed his diaper in front of Lainey, who only has a little sister.
Lainey: WHOA! What's that?
Mommy: That's called a penis. It's what boys have instead of a vagina.
Lainey: Like Daddy? (she's never seen daddy's but we've talked about boys vs. girls)
Mommy: Yup. Daddy's a boy so he has a penis too.
Lainey: WELL. I'm glad I'm a girl and I have a lovely vagina.
Mommy: *LMAO* Me too, Lainey. Me too.