When I was little and being a brat, my grandmother used to threaten to rip my whiner out (the "whiner" being the part of my body that caused me to whine). My mother fully supported this threat. Once she even went so far as to put me up on the kitchen counter and take out a knife. I had to promise to stop whining so that she wouldn't remove my whiner.
...to be honest, the threat never kept me from whining, it just made me think my grandmother was mean.
A childhood belief about general

others believed things like this
- i used to think a small man named homer lived in my grandmother's freezer and made ice. — ana
- I used to believe that ants walked inside your body and that's what caused an itch.Anon
- i used to think my grandmother's actual name was Gramma!— el kristadore!
- My grandmother used to tell me that thunder was the angels bowling.— laf
- I used to think that my grandmother was a pioneer from the covered wagon days.— jasonchic
- I thought I would fall through the cracks in my grandmother's deck.— Hannah