When I was younger I thought that men who smoked were the only people who grew facial hair becuause the only people I had ever seen with mustaches or beards were smokers. I didn't realize that all men grew facial hair until the fourth grade when we had a sex-ed class and they taught us all about puberty and hair growth.
A childhood belief about smoking

others believed things like this
- When I was a kid I though facial hair on a man is what gave them the deep voice — Adrian Z.
- When I was younger I cut my Barbie doll's hair and wondered why it never grew back.Anon
- I used to think that everybody's hair was black and if you had blond hair, you dyed your hair.— ~_~CoolKid93_~_
- I used to believe that after I cut my stuffed animals hair that it really grew back! — Kristy
- I use to believe that your hair grew because you wash i.e like watering a plant — HJON
- When I was little I thought that dying your hair means you kill your hair.Anon