Changing Room Manners

Yesterday I found myself in the family change room with the kid and her older sister. After ensuring the door was locked I peeled off my swimsuit and stepped into the shower. The girls were getting out of their suits, and this was their exchange :

Older Kid : We need to make sure the door is shut so no one walks in on us. 

The Kid : Yeah. I don't want anyone to see my weiner. 

Without missing a beat,

Older Kid : You're a girl. You don't have a weiner. You have a vagina. 

The Kid : Yeah. That too. 

I almost drowned in the shower from laughing so hard.