When I was in 3rd grade, some of the older kids gave us advice and warnings about what to expect with our new teacher. She was a little picky wouldn't let us in the very front of the room so the older kids told us that she had an invisible fence surrounding that area and if we walked through it, we'd get electrocuted. For the first half of the school year I was puzzled as to how we weren't zapped everytime we had to write on or clean the chalkboard.
I was so gullible...
A childhood belief about classes

others believed things like this
- my older brother told me that if i didnt clean every bit of dirt out of the prints on my feet, i'd die— chel
- My mum told my older brother that dogs weren't allowed in London.— Fiz
- My older brother told me that everytime you sneezed your lungs would bleed. I believed this until I was 21!— Gem
- i used to believe there were invisible sharks in the deep end of the pool, thanks to my older brother.— Melissa
- I used to think the word "european" had something to do with pee, and that kids weren't supposed to say it.Anon
- I used to think that adults spoke an entirely different language (not English) when kids weren't around. — Swordfish