In my native language, the word for "scar" is pronounced the same way as the letter "R" (the word for the letter, not the sound). Therefore, I thought for a really long time that if you hurt yourself bad enough you got a big red "R", possibly on your forehead (I don't know where that came from. I suppose I had heard of (obviously not met!) a person who had got a scar on their forehead).
A childhood belief about speaking

others believed things like this
- I used to believe that L-M-N-O-P was 1 letter, pronounced elemenopeeAnon
- I used to get mad when people used the word "native" because I thought they were making fun of my name!— Nate
- In first grade, I thought that if I've never heard of a word before, then it wasn't a word.— Destiny
- I always thought that a little person lived inside each mailbox waiting to take my letter to its destination.— Anne
- I used 2 beleive yer @$$ was yer foreheadAnon
- I used 2 think that the scar on my side said "UNUSEABLE" LOL!!!!!!— John In Pennsylvania