My mom told me people say "Bless you" after you sneeze because your heart stops for a second. I thought that if nobody would ever say anything after I sneezed, I would die, so I would say it if nobody else would.
A childhood belief about general

others believed things like this
- Apparently from seeing EKG's on TV, my daughter believes people die when their heart stops "beeping."— Jager
- when i was a little kid. i used to think that when u hold ur breath ur heart stops.. LOL :P — Annonymus
- I used to believe that "God bless you" was "gableshu," so everytime someone sneezed, I would say "gableshu."— JS
- I also thought that people in different countries coughed, sneezed, laughed, or cried in their own language!— Mini
- I used to think that when people had heart attacks someone came and stabbed their heartAnon
- I used to think that foreign people coughed and sneezed in a different language.— Even more stupid