When I was little, I always used watermelons to sit on after we bought one from the store. My mom always warned me, "don't fart on it or it will explode!"
I believed this until I was 15 when I told my older sister not to fart on the watermelon and she just laughed at me.
A childhood belief about watermelons

others believed things like this
- My brother once told me that if you burp and fart at the same time, you'd explode— Aubrey
- i thought that if you held in your fart you burp if you happen to hold both in you explode!— ahh!
- I once told a friend of mine that if you held in a smelly burp, it'd turn into a fart. She believed me.Anon
- I was told in first grade that if you fart burp and sneeze at the same time you would blow up— bob doodle
- I used to believe if you fart hard enough you can fly— Bob
- I used to believe that when you fart, your tummy was breathing!— Nicholas Orsmond