My uncle told me (and my cousin) that when you hit puberty your body changes gender. He was always telling us stories about "when he was a little girl..."
A childhood belief about getting older

others believed things like this
- My cousin's mom told my cousin that pop makes you short. He probably believed it.— Molly
- i told my mother that sex was when two people get naked and tell ghost stories.— linds
- I used to believe Nuns are a third gender, a cross between men and women:)Anon
- I used to believe that circuncision was a natural process and that the foreskin fell off during puberty.— Yure
- my uncle was a doctor, so when he told me his vw could fly, i believed.— boodles
- Up until I was nine my uncle told me that the round bales of hay were cow eggs.— Fred