I was told that if you fell asleep with gum in your mouth you'd wake up with gum in your hair. That much makes sense. But I thought it was because the gum would absorb through your head and come out through your scalp into your hair.
A childhood belief about chewing gum

others believed things like this
- 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 believe that if I fell asleep in the bathtub I would wake up in the sea.— Brenda
- I used to think that everybody's hair was black and if you had blond hair, you dyed your hair.— ~_~CoolKid93_~_
- I use to believe that if my hair fell out I had cancer, and was most likely going to die soon. — Luca
- When I was little I thought that dying your hair means you kill your hair.Anon
- I use to cover my head at night because I thought monsters would give me a bad hair cut while I was sleeping!— Amy