When I was a kid I thought the dementors from Harry Potter came into my room at exactly midnight every night. If I wasn't asleep by then with my covers covering my ears and nose, they'd suck up my soul. Don't ask me where that one came from...
A childhood belief about monsters

others believed things like this
- i used to believe Harry Potter was real— charlotte
- I used to believe that if you slept with the covers covering your neck, vampires couldn't bite you. — Moot
- I had the weird superstition that if I let all the bathwater run out it'd suck my soul down with it too.— Dan
- when i was little i used to believe that all my barbies would come alive at midnight while i was asleep — stephanie
- I used to think that Dementors were what nuns became after they died.— Nancy
- I believed that the pictures on my nighties came alive at night and played in my room while i was asleep!!Anon