When I was 5 or 6 my best friend convinced me that the devil lived in the sewer and if you weren't fast enough when you used the toilet he'd come up and poke your butt with a sword.
A childhood belief about fear of

others believed things like this
- I used to believe that crocodiles lived in the toilet and would bite my butt when I had to go to the loo.— Oz
- When i was small i used to think god lived on top of my house and the devil lived right underneath it.— Missuss D
- My mum told me that if you eat while you're on the toilet, you're feeding the devil! — Claire
- i used to think that when i was pooping a crocodile could come out of the toilet and bite my butt off.— derek
- I used to believe that monsters lived in my toilet and they ate my poop and urine when i flushed the toilet.Anon
- a friend was convinced that his school was an asylum, and couldn't be convinced otherwiseAnon