I used to believe that if you accidently swallowed a piece of bubblegum it would inflate in your throat and stop you breathing.
A childhood belief about sweeties

others believed things like this
- When I was a kid My friend’s mom told me if I swallowed my bubblegum it would make me fart bubblegum bubblesAnon
- I used to believe that an Adams apple was a piece of apple that was stuck in someone's throat.— Ron Aaron
- I used to be scared that if I chewed my cuticles and swallowed a piece of skin, I would become a cannibal. Anon
- When i was young I used to believe if I ate ham fat I was going to inflate like a balloon— a guy
- When I was a kid, I thought you could get arrested if you accidently walked into the wrong restroomAnon
- I used to believe that when you fart, your tummy was breathing!— Nicholas Orsmond