When I was a kid, I asked my dad about the meaning of the AM/FM switch on the radio. He said that if you changed the switch, the radio would turn into a different radio. I had the image of doors folding and unfolding and the radio becoming much bigger -- more like a home stereo (AM -> FM ?). I was very careful *never* to touch that switch, because I didn't want my daddy to lose his portable AM radio.
A childhood belief about technology

others believed things like this
- I use to believe all the people singing on the radio were IN the radio.— Yvonne
- I thought if something was radioactive it meant if you turn on a radio near it it would blow up— Nate
- i used to believe that if you were a kid and u turned the radio on in your car then the car would blow up— steph
- I used to believe that little people lived in the radio.— Brittany
- I used to believe there was a newsreader inside the radio where the light was!!— Christine
- My cousin used to believe the singers in the radio were ants....— EJH