I have a similar one to the girl who had a scary door at school. We did too, and one day (on a dare) i opened it and there were lots of pipes and gum. I was disappointed because we thought there were dead people in there too.
A childhood belief about fear of

others believed things like this
- When I was a young girl I used to believe that drugs were sold in drugstores so I never dare get into one.
— inma d - I used to think that you could get a tan if you turned the oven on, opened the door and stood in front of it.Anon
- I thought that people were like cars because cars have exhaust pipes, and people fart.— Matt
- I used to believe that a street sign that read "Dead End" meant that there were dead people buried there.Anon
- I used to believe that the people on tv were really in the tv and if you opened the back they would be there!— Kathleen
- WHEN I WAS FIVE I THOUGHT DEAD PEOPLE
JUST GOT THRONE IN THE BIN AT THERE HOUSE.— JESSELEE GWYNNE (VICTORA)