When I was four or five I used to sleep on my left side. Every night I would hear a thumping, drumming sound in my left ear and could never figure out what it is, bu,t after much theorizing, concluded the only possible answer is that giant dwarfs lived in my ears - dwarfs because they had to fit in, and giant because they had to step loud enough for me to hear them (little giants never occurred to me though). I think it took me a year or two before I figured out it was my heart I heard thumping.
A childhood belief about sleeping

others believed things like this
- I used to believe that the short display beds at department stores were for dwarfs.— p
- I used to belive that if I put my finges in my ears when i sang noone could hear me— Helen
- When I was younger, I used to believe if i covered my ears before I farted no one else would hear it.— Lime
- i used to believe that a ghost lived under my bed and that a giant lived under our dining room table.— nameless
- When I was five or six, I was worried that I'd lost my heart because I didn't hear it beating.Anon
- i used to think teachers lived in the classrooms b/c they were there before you came and after you left.— josieg