I believed that it was a very bad thing to leave the TV on at night after they played the national anthem and the screen became snow. (Yes, this was the days before 24-hour programming). I thought it would break the TV or cause a house fire. I still can't stand it when a TV is playing snow!
A childhood belief about tv

others believed things like this
- i was convinced that snow was pink, i was devastated the first i saw real snow.Anon
- I always thought you could break through the tv screen and walk into whatever was on the screen at the time.— Linda
- I thought snow had diamonds in it because it sparkles when the sun hits it.— Giselle
- When I was a kid I thought Mary had a little lamb whose FLEAS were white as snow.— jen
- I used to believe that I could smell when it was going to snow.
(I still can!)— sw - I used to think that snow was rain still in the bag.— Robert