I used to think that having sex was going under a bed and kissing. So, when I was 3 my neighbor boy and I went under his bed and "had sex"
A childhood belief about sex

others believed things like this
- I used to think babies came from french kissing. (just french kissing)— Sharon
- I use to think labor day was neighbor day where you would go out and visit all your neighbors.— euphonic
- My brother once referred to the neighbor as a lesbian (she was Lebanese...)Anon
- My neighbor girl told me that "crazy men can have babies"— Russ
- when I was a kid my neighbor told me if I picked my nose I would poke out my eye. I believe him. — Jane
- When I was 3, my neighbor told me she was a witch and she said Godzilla was going to step on my house.— Grayson