I used to believe there was a malicious rat that lived inside the light switches and sockets in my house. I also belived that if I played with these things the rat would come out and kill me. Parents are f'd up.
A childhood belief about monsters

others believed things like this
- My parents used to own a Restaurant. I belived the lobsters in the tank were pets.— Ned
- The sun switches off at night and on again in the morning — Edward
- I used to believe there was a newsreader inside the radio where the light was!!— Christine
- I used to think that if you put geraniums into electric switches it would blow up the whole world!— Steve Jeffs
- I used to believe that if you opened up an umbrella inside your house that the whole house would fly awayAnon
- When i was small i used to think god lived on top of my house and the devil lived right underneath it.— Missuss D