As a young child, somewhere around three to five years old, I had read many fairy tale/ nursery rhyme type tales. Whenever someone was asleep in a bed in one of these stories, the picture showed their feet uncovered, usually hanging over the edge of their bed. After reading many of these, I (usually becoming cold during winter nights) was afraid that I would grow so tall that my feet would hang over the edge of the bed. I'm not sure WHY this nagged at me; it just did.
A childhood belief about sleeping

others believed things like this
- I used to believe that when you are 90 years old, you are also 90 feet tall.Anon
- When I got my feet measured by the electronic machine, I thought that the machine will squash my feet!— Helen
- when i was young i used to believe that chewing gum was made out of cows feetAnon
- When I was younger, I thought I could run and fall off the edge of the earth. Anon
- My Grandmother once told me she could unscrew her feet. I believed that for years.— Andy Bettison
- I used to believe you could walk on clouds. And you would be able to walk in space on the edge of the world.— Alex