As a kid I once thought that I could fashion myself a smashing pair of earrings by sticking some small ball-bearings from a little pinball toy in my ear. I had to go to 2 hospitals to get them syringed out.
A childhood belief about toys

others believed things like this
- I used to think volleyball was actually called "ball-y ball"Anon
- ... i used to believe the more stripes my pair of sneakers had, the faster i would run ...— wilbur
- when i was younger i thought ants had tongues. i always pictured them sticking their tongues out at me. — i was an idiot
- I used to believe that you had to have your eyes closed and your tongue sticking out for you to be dead! — pinkgreencrazy
- I used to believe that the way you knew when people were dead was when their toungue was sticking out. — Geneva
- I thought the ball-headed person in the Bic logo was an alien and communicated using alien-like noises.Anon