I used to think that flipping someone the bird was called "f*cking them off." Additionally, someone once told me that "reller" was a euphemism for "sh*t," and I believed it.
A childhood belief about swearing

others believed things like this
- I use to think that flipping people off meant "hi".— kat
- I used to believe that a penis was called a bobby because my mum told me... I believed this until I was 15.— Patricia
- I believed that the breed of dog called Boxer was called that because they could stand up and box.Anon
- until the age of 6 i didnt know bird had feet.Anon
- i used to believe if a cat ate a bird the cat would eventually GROW WINGS!— nightmare
- I once for some reason thought a Mantis was a bird, instead of a bug...— Laurie J.