I remember learning that sex involved the penis entering the vagina but I didn't understand what you do while it was in. I thought you just went to sleep like that.
A childhood belief about sex

others believed things like this
- I used to believe that gay sex involved a man sticking his penis inside another man's penis.Anon
- i used to believe that a penis was the same as a vagina except really long— *stupid*
- i used to believe that if you have sex for too long, the penis would stay in your vagina— Angela
- i used to think that having sex was licking the persons vagina or penis until u got tiredAnon
- I used to believe that thunder was aliens entering the atmosphere, and lightning was them firing lazers at us!— Zeepoo-zoop
- I thought that smoking pot involved an actual pot from the kitchen.— Aeris