My mother once told me that if I screamed my fingernails would grow.
I don't think she knew I had figured out they could be cut yet, because I began screaming to test this theory. Needless to say, they didn't grow.
A childhood belief about general

others believed things like this
- i used to believe that if i bit my fingernails then a finger would grow in my stomach— polly
- i thought that when it was your birthday you grow and then you didn't grow until a years time.— hello
- My mother told me that if I kept sucking my thumb I would grow another one out the side of the first one.Anon
- When I was little, I couldn't wait to grow up so I could grow a mustache. I am female.— Laura
- i didn't beleive this, but a kid my sister knew thought if he screamed in a really high voice, he ran faster.Anon
- I used to believe that money really did grow on trees, but grownups just didn't want us to know about it.— Mariah