When I was a kid my dad told me that if I lost a tooth I should put it in a glass of water, because it would transform into a coin when it was night. I was depressed when I found out that this wasn't true...
A childhood belief about general

others believed things like this
- I used to think that if you ate cat food you would die. I found out it wasn't true
— Bob#4 - I used to believe the the tooth fairy was a Pokemon fan because she got me Pokemon Crystal for my lost tooth— Pokemon fan
- I believed a star that I later found out was the planet Venus was the Tooth Fairy— Jillybean
- When I was a kid I always thought that a water tower was the robot from the TV show "Lost in Space".— sherryj
- 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