I used to believe that a woman had 3 body openings: The anus, the "pussy," and the vagina. The vagina was between the other 2, and was where the people "did it" and where the baby came out.
A childhood belief about rude bits

others believed things like this
- i used to believe that pee came out of the vagina— Janey
- i used to believe that a penis was the same as a vagina except really long— *stupid*
- I don't know why or where I got this from, but when I was little, I referred to my vagina as my "goose". — StrangeLilGrrl
- i used to believe that if you have sex for too long, the penis would stay in your vagina— Angela
- Until I was ten or eleven I thought a vagina was a "pagina" Anon
- i used to believe that women peed out of their arse and pooed out of their vagina— TIM wilson