Conversation with Zoe while changing Nate's diaper.
Zoe: "He has a cute little bottom."
Me: "Yes, he does."
Zoe: "It is a strange little bottom. Our bottoms are not like that. They're flat."
Me: "Well, that's what makes him a boy."
Zoe: "Is Daddy's like that?"
Me: "Yes."
Zoe: "Does it hurt him when you put the diaper on?"
Me: "No."
Zoe then lost interest and left the bathroom. This is first time she's questioned the fact that Nate looks a little different than her...