When I was little my older brother convinced me that thunder was caused by clouds banging together. Makes sense even now.
A childhood belief about thunder and lightning

others believed things like this
- When I was little I thought that thunder was the bricks of our house banging together for some reason.— Ncik
- I think lightning and thunder is caused by angels throwing temper tantrums Anon
- I used to think that clouds were caused by cigarette smoke— Monkey Dave
- I used to believe that driving caused the clouds to move.Anon
- My mother always told me that thunder came from clouds colliding with each other.— Martijn
- I was told as a child that the sound of thunder was from angels bowling in the clouds.— Patty, NY