I used to believe that my parents swallowed the toothpaste after they brushed their teeth because I never saw them spit it out. So one day I brushed my teeth and swallowed all the toothpaste in my mouth, and said "Mom! I swallowed the toothpaste like you and dad!" and she told me if I did it again she was going to have to call Poison Control. I never did it again.
A childhood belief about general

others believed things like this
- My mother told me that the tooth fairy would only come if I brushed my teeth.— Dale
- For some reason I used to believe humans were made out of toothpaste— lu
- if you eat toothpaste straight from the tube, you will get worms— wormelow
- I used to believe that if I didn't brush my teeth at night, ants would crawl into my mouth and eat my teeth.Anon
- when I was seven my brother told me that if I swallowed chewing gum my arm would drop off.— john
- My Mum told me that if you swallowed chewing gum, your bones would stick together inside you.— Pauliboy