When I was young, my parents told me that babies came from God. Not very explanatory. I had seen bits on TV about doctors & hospitals & mothers strapped on tables to give birth--so I worked out that when a baby was due, the doctor would stand in the hospital parking lot and wait with his arms out for the baby to drop from heaven. They strapped the mother to a table so she wouldn't get excited & jostle the doctor. Why did her belly get big? God made it happen so the doctor would know when to go outside & wait! :)
A childhood belief about reproduction

others believed things like this
- I used to believe that after 9 months, mothers went to the hospital to buy a baby off the doctors.Anon
- when i was young i used to think babies just poped out like a little pistle and the doctor caught itAnon
- I used to want to be a doctor when I grew up, because doctors never die, as they can cure themselves.— Stuart
- I used to think eating raw potatoes would give you "BEZORES".
Our family doctor told me this— Moodycop - my uncle was a doctor, so when he told me his vw could fly, i believed.— boodles
- I used to think that babies were made when you press your mums belly button.
Then a baby would fall out— Chris Hyndman