Back when I was about 5 or 6, I had asked my Dad, of all people, the question: where do babies come from. He had gone quiet and because I couldn't take a hint at that age started to guess. My Dad stopped me when I asked if babies came out of the a mother's mouth or belly button.
A childhood belief about reproduction

others believed things like this
- babies come out of your belly button— Kit
- When i was between the age of 3-7 i used to bleave that babies came out of your belly buttonAnon
- I used to believe that babies came out of a womans belly button.Anon
- when I was a kid I thought that babies come out of a belly-button.— Ana
- I used to believe that babies came out of your belly button. What else could they possibly be for? — Andrea
- That the belly button was the place where babies where born from.Anon