I used to believe that the background music in movies helped the actors do their stunts (i.e the music from e.t helped Elliot's bike take flight) and that if you copied the song in your head you could do the stunt. However, i tried the trick with my first bike and i didn't work. Bummer.
A childhood belief about magic tricks

others believed things like this
- My music teacher once said that music in an electrical piano was made by little tiny men that lived inside it.Anon
- I used to believe if you listened to to music upside down the music would be backwards— HOopty
- I used to think that AM and FM stood for "American Music" and "Foreign Music."— Sylvia Fowler
- my brother told me that if i ride my bike with my mouth open i will swallow my tounge. Anon
- I used the scar on my dads leg was a shark bite when in fact he fell off his bike when he was a child— Wendy Murray
- i used to believe the turning signals on cars helped them turn sharp corners.— Julia