I thought "bless you" always came after "excuse me" after burping, farting, etc. It was pretty funny when I would say "bless you" after someone passed gas.
A childhood belief about speaking

others believed things like this
- In "God Bless America" I thought it was "With the light from a bulb" instead of "from above."— Carol
- I used to believe that when I said my prayers, "God Bless..." meant please keep burglars awayAnon
- In the Hail Mary prayer, I used to say 'Bless a dark fowl among women' rather than 'blessed art though'Anon
- I used to believe that "God bless you" was "gableshu," so everytime someone sneezed, I would say "gableshu."— JS
- Looking back at it, the belief that dogs eat cats is a pretty funny idea. I used to believe it myself.Anon
- I thought farting was magical wind, and if you did it loud and hard, you would be able to move yourself.— Blake