When I was younger my mum told me that cavities in your teeth are caused by small worms burrowing and living in the tooth! I believed this till I was about 12!
A childhood belief about general

others believed things like this
- I used to believe my dentist could give me a shot to straighten my teeth and prevent cavities.— sircigar
- I used to think that the tooth fairy puts you in a deep sleep before stealing your tooth/teeth.Anon
- I used to believe that in the tooth fairy took all your teeth and built a tooth city for her to live in!Anon
- My mother told me that the tooth fairy would only come if I brushed my teeth.— Dale
- As a child I was taught that the tooth fairy would buy our teeth so she could add them to her crown.— Lola
- I believed that the inside of a tomato was a small, living creature and I flatly refused to eat that bit.Anon