When I was little, I thought if guys grew their hair to their shoulders, they were automatically girls. And if girls kept their leg hair too long they were automatically boys.
A childhood belief about hair

others believed things like this
- I used to believe that little boys grew up to be girls and little girls grew up to be boys. — Darin
- I thought that the difference between girls and boys was that girls have teeth.
Anon - I used to believe that hair was only for men, and girls wore wigsAnon
- I used to think that everybody's hair was black and if you had blond hair, you dyed your hair.— ~_~CoolKid93_~_
- I always thought when I was a kid that Milo is for boys and that milk are for girls. . . — Cathyia
- i thought cats were girls and dogs were boys. Anon