My Grandmother told us kids that if we didn't clean up all the hair after we go our hair cut, birds would steal the hair and make nest out of it and we would get headaches.
A childhood belief about birds

others believed things like this
- I used to think that everybody's hair was black and if you had blond hair, you dyed your hair.— ~_~CoolKid93_~_
- I used to hold my hand over my hair whenever i left the house and it was windy incase my hair blew away— lisa
- I used to believe that you could curl your hair by twirling a strand of hair wrapped around your finger— Anonymous
- I believed that if you ate a piece of your own hair, a new strand of hair would grow on your head.— Ryo
- I used to think that bleaching your hair meant washing your hair with toilet bleach.Anon
- When I was little I thought that dying your hair means you kill your hair.Anon