I used to believe that when a guy kissed a girl and they traded spit, the girl would get pregnant.
A childhood belief about reproduction

others believed things like this
- A girl could get pregnant going to the bathroom after a boy.— Brandy Gallop
- when i was 7ish i used to think that you got a girl pregnant by peeing in them— nick
- i used to believe a girl will pregnant if kissing a boy on the face— mulan
- I used to believe that french kissing could get a girl pregnant.Anon
- When I was little, I believed that a girl could get pregnant by loving her husband and kissing him.— Ryne
- I used to believe that if a girl swam in a public pool that a boy had peed in she would become pregnant— DarkSock