A certain cousin of mine tends to be quite stubborn. When she was about five years old (and I in my late teens), she was absolutely certain that there was no way I could know how to read, as I'd never "went to school." (My parents chose to home-school me.) Eventually, I managed to set her straight and even tease her about it a couple of times.
A childhood belief about reading

others believed things like this
- I used to think that my teacher lived at school until she came to school late one day. I was shocked!— Wow, you have a life?!
- I used to think making straight A's in school was literally writing A's straight. Anon
- My brother used to believe that when we went to school dogs went to dog school to learn to speak and read— Matt
- My friend managed to convince a gulliable kid at various stages of school that he was superman and a robot.— naff
- I used to think that if I was home sick that no one else could go to school either. (it was MY school)— kirk
- that the money I gave at sunday school would go straight to God.— christine