I once thought that clouds were solid because of cartoons. I thought thunder was formed by those solid clouds colliding with each other. Lightning was formed by people on the top of clouds starting fires and when another cloud crashes into the cloud that they are on, it produces an explosion that sends lightning to earth.
A childhood belief about thunder and lightning

others believed things like this
- I think thunder is the clouds fighting and bashing eachother and lightning is fire balls from the sun.— Crazy Cowgirl MADI
- When I was young, I thought that the smoke that jets leave behind them was how clouds were formed. — Rebecca
- My mother always told me that thunder came from clouds colliding with each other.— Martijn
- When I was a child, I used to believe that clouds were solid and that you could walk on themAnon
- I used to believe clouds were formed by jets and their exhaust. — Olivia
- I used to believe that when it would be raining the white clouds lost to the dark clouds.— janet