As a child I couldn't sit on the edge of my bed. I lived in constant fear of a ghostly hand snapping out from underneath and grabbing my ankle. I used to stand up on the bed and leap to safety.
Also, I knew never to turn my back to a window at night as the monsters would break through and grab me from behind.
A childhood belief about under my bed

others believed things like this
- When i was small i used to think god lived on top of my house and the devil lived right underneath it.— Missuss D
- when i was a kid i believed i could make things happen just by snapping my fingers like in mary poppins!!Anon
- I really believed, underneath her hair, my mom had an eye in the back of her head.— Jessica
- When I was a child I used to believe that stand up pianos actually told jokes as well as playing music.— L MAN
- I used to only sleep on my back because I thought I would break my ribs if I slept on my stomach.— Molly
- When I was a child, I had a fear of bagels. I thought they were stale doughnuts.Anon