The conversation was bound to happen

Abby is learning about the differences between a girl and a boy. I would like to reference an older post where William learned about the differences between girls and boys.
http://mommy-am-i-killing-you.blogspot.com/2009/01/girls-vs-boys.html

Now it is Abby's turn. Here is her story.
Abby (yelling): Mommy, mommy, mommy, mommy. Mommy!!!
Me: Yes Abby, what do you need?
Abby (still loud): Mommy!
Me: Yes?
Abby: Um, mommy? I have a question. What is my penis called again?
Me: What?
Abby: What is my penis called?
Me: Abby you don't have a penis. You have a vagina.
Abby: Bober!! (yelling to William) Bober!!! My penis is called a ba-gina!

Great. Terminology is the first lesson. We will get the rest later.