In case you didn't know, and for my friends who will be teaching their little ones where babies come from, here's what you should tell them:
Kid 1: Look, the fairy is this book has the same name as me!
Me: Maybe the book is all about you! Are you a fairy?
Kid 2: I was a fairy once! That's how babies are made. You're a fairy on the ground, and the you evaporate into the clouds. And then you evaporate into your mommy's belly.
In case you didn't know, now you know. You're welcome.