When I was little, I heard someone say that the pianist "played by ear". I took this literally and thought that he played the piano with his ears. At one point, my belief was confirmed when I saw someone on a cartoon doing this.
A childhood belief about hobbies

others believed things like this
- I used to believe that invisible giants played with us like I played with my dolls. — Alexandria
- i thought that all of the shows on tv where played live even when someone died. sad, i no.Anon
- When I was little I used to believe that if I played with fire, then I would wet the bed. — Danielle
- I used to believe that my toys played without me while I was gone and that was way before Toy Story!— K.ladybug
- We were told that if you played with egg shells you would get worts !— GAJ
- I used to believe that if you played a record too many times it would wear it out.— April