I used to think that, depending on which trimester, or which stage of pregnancy you gave birth in, you gave birth to animals, and that that's where animals came from. (It went mice, cats, dogs, humans. I had no idea about elephants and stuff like that.
A childhood belief about reproduction

others believed things like this
- I used to believe that mommies gave birth to girls and daddies gave birth to boys. — Jackie
- When i was little i thought that the mom's gave birth to the daughters and the dad's gave birth to the sons. Anon
- I used to believe that women gave birth to girls and Men gave birth to boys— Rob
- I used to believe cats ate dogs and mice ate elephants— lucien
- Until I was five, I used to think that women gave birth to baby girls and men gave birth to baby boys— Cassidy K
- I used to believe that boys, gave birth to boys and girls gave birth to girls. How i'm so wrong now.— Sarah