My mother always used to tease my brother and I by telling me that I would grow up to be a fine young man, and he would be a fine young woman. We both thought for years that boys grew up to be girls and girls grew up to be boys. We eventually got straightened out in sex ed, but not before my brother started wearing my grandma's curlers and lipstick.
A childhood belief about sex

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 all babies came out as girls and later on in life some of those girls turned into boys — Tom
- I used to believe that boys, gave birth to boys and girls gave birth to girls. How i'm so wrong now.— Sarah
- I always thought when I was a kid that Milo is for boys and that milk are for girls. . . — Cathyia
- I used to believe both boys and girls had penises so i thought sex was when they tied them together.Anon