OK, this isn't really a belief, but when my brother's friend's brother was little, he used to practice calling 911, and one day the phone was actually ON, so he heard the person say "911, what's your emergency?" and he got scared so he gave it to his brother (my brother's friend). The dispatcher said "911 what's your emergency" again, and my brother's friend answered "I lost my green ruler,". I am still wondering why they didn't track the call.
A childhood belief about police

others believed things like this
- When I was younger, I think i can change my brother with a friend— Mbaclé du 55
- My brother used to be scared to poop in the potty. He thought that he was pooping out his bones.— Lillyth
- my brother told me rice crispies were really fish eggs we gave to the goldfish. I never ate rice crispies.— johnboy
- I used to think that when I was as old as my big brother, I would be a boy too. :)Anon
- My brother used to believe when our dog was getting fat that she was going to pop. He Cried!— A very Ashamed Brother
- my brother used to believe that everybody except him could see their eyeballs— Matt