Yep. It had to happen. Sooner or later one of them was going to get curious. But, honestly I would have thought my eight year old would have brought it up sooner than my 4 year old. The question? Mama? How does a baby get in there? They know how a baby gets out. They know the names for all the parts. But seriously? How does that baby get in there? I'll be at the book store if anyone needs me!