When I was younger, I thought that when you farted, a little brown, smelly bubble would pop out of your butt, and then it would pop loudly. When it popped, a nasty-smelling gas would be released, and if some of the gas got on your clothing, you would smell bad forever. This resulted in: a) me looking behind myself after farting (to see the bubble) and b) me jumping as soon as I farted (so no gas got on my clothes!)
A childhood belief about farting

others believed things like this
- My mom used to tell me that if I swallowed my gum when I farted, I would blow a bubble out of my butt.— bubblebutt
- I used to believe that if you swallowed chewing gum, when you farted, you would blow a bubble out your butt.— Bubble Butt
- i used to belive if you swallowed gum and then farted, you would blow a gum bubble with your butt.Anon
- I used to believe that if I swallowed bubble gum, a bubble gum tree would grow inside of me. — Ryan
- I used to believe that when I farted, i could smell up all the stench before anyone else could smell it.— Tim
- I used to believe that the bubble gum medicine was really made of bubble gum. i believed this until i was 16.— Shawn