If someone said they have heartburn, they're heart was actually on fire.
A childhood belief about general

others believed things like this
- The song called heart of glass mixed me up as a kid. I heard "Heart and ass". — oops
- I used to think that when people had heart attacks someone came and stabbed their heartAnon
- I used to think that if you eat pig heart, you could grow another heart and be twice as healthier. Anon
- i always thought it was Grape Balls of Fire instead of Great Balls of Fire— Courtney
- i used 2 think if u lied your pants would catch on fire cus of the sayin "lier lier pants on fire!"— nell
- When I was little I used to believe that if I played with fire, then I would wet the bed. — Danielle