When I was little I used to fall off my bed and when I woke in the middle of the night I would find myself on the floor. Since I couldn't find my pillow (which usually fell on the other side of the bed) I deduced that a ghost would push me to the floor and take my pillow to sleep on it somewhere else. Of course, later the theory shattered when once I found the pillow on the other side of the bed (I looked that time)!
A childhood belief about under my bed

others believed things like this
- I used to believe in Perez mause when my teeth fall, I put them under the pillow to see what happened— AyrtonZ01
- My sister used to sing Kylie's "cheese on my pillow", somehow tears works better.— Tom
- when I was little I believed that if I put a white stone under the pillow with my tooth I make more moneyAnon
- My nephew refuses to put his tooth under his pillow in case the fairy burns him with her wand.— Nina
- I used to believe that these big, strong men would be on each side of an airplane to push it when it takes offAnon
- When I was little, I used to believe I could fly from my bed but I didn"t ....I fell on the floor!Anon