You know those giant Bullet Bills from old Super Mario games that would blow up and try to hit you in slow motion? They had angry eyes, etc?
Well, when I was a little girl, I used to imagine that those bullets would be moving around in my stomach, etc and when they would crash against a wall -- it would cause the hiccups.
A childhood belief about belly buttons

others believed things like this
- That if you didn't have your seat belt buckled up when the car was in motion, it would crash.— Dave Smith
- I used to believe that when i died it was like a super mario game... I had a certain number of lives.— David...waffles
- i used to think the sun was a giant fireball like the ones from the mario brothers throw except a big one.— chris
- my cousin uded to belive that hiccups were caused by the food in your stomach colliding.— Christine
- I used to believe the Wall Street Crash of 1929 was a literal car crashing into a bank.Anon
- The trees moving made the wind blow.— little jimmy