My little brother believed that his headteacher was really Agent Smith, and his teacher was Trinity in disguise!
A childhood belief about teachers

others believed things like this
- I used to believe that Will Smith's name wasn't Will Smith, but that it was World Smith.— Scott
- I used to believe that the Holy Trinity was Dad, God and Santa Claus!— Cathy P.
- I used to think "Aero Smith" was only one person.Anon
- i used to believe that a volcano was an upside-down UFO in disguise— Sally
- i used to believe that my dog was really a cat in disguise trying to get information on the dog empire!— strange and used to be stupid
- I used to believe that eye-lash curlers were eye-ball eating aliens in disguise— Eliza