When I was a child, I thought that "ferret" was a bad word, and to call someone a ferret was one of the meanest things you could do. To this day, I cringe when I hear the word.
A childhood belief about swearing

others believed things like this
- i used to think that the word "stupid" was a curse word, ranging in scale right beside the "f" word.Anon
- In first grade, I thought that if I've never heard of a word before, then it wasn't a word.— Destiny
- i used to think that the word 'clothes' was the plural for 'clo.' so i'd call a sock or a shirt a clo. — jessimocha
- When i was around 4, i thought "dead" was a bad word. I also thought "Forget it" was a bad word.— forget it
- My niece used to call Marmite Falloy! Where she got the word Falloy from nobody knows— Russ
- I used to think the word fever was just another word for giraff— Marshall m