When I was little I thought girls had "man parts" as well, but it just took longer for them to grow.
A childhood belief about sex

others believed things like this
- When I was little I thought that only little girls had nipples, and they went away when you grow up. — Cutie
- I thought that the difference between girls and boys was that girls have teeth.
Anon - i thought that when it was your birthday you grow and then you didn't grow until a years time.— hello
- I used to believe all babies came out as girls and later on in life some of those girls turned into boys — Tom
- When I was little, I couldn't wait to grow up so I could grow a mustache. I am female.— Laura
I used to believe a man and a woman needed a doctor to put their parts together when they did it.— Phil