I used to be scared of the older-style toilets with a raised tank, due to an episode of Grange Hill in which someone pulled the chain and the water from the tank emptied onto them. I think it was just a prank played by some other kid on the show, but I still believed that could happen if I used one.
A childhood belief about fear of

others believed things like this
- I used to think that the TV show "Shark Tank" involved actual sharks in a tank.Anon
- After Grange Hill's "Just say no campaign" that people would force me to take drugs ... if only.— Netty
- After seeing Thomas the Tank Engine, I believed that all the locomotives in the world had a face.— Joe
- My parents used to own a Restaurant. I belived the lobsters in the tank were pets.— Ned
- I used to think water towers were where everyone's uh...waste...went to from the toilets.— Stephanie
- That an undertow was a giant toe under the water that grabbed people and pulled them under.— mikita Jones