I used to think that "Shut up" and "Stupid" were the only swear words in the world...
A childhood belief about swearing

others believed things like this
- I used to believe that “shut up” was a swear word.Anon
- I thought there were some swear words so bad if you said them you would go to jail!— Mexicrat
- I thought that "fool" and "What in the World?" and "crap" where ultra-vulgar words.Anon
- I used to believe that swearing was just saying, “I swear!”Anon
- I used to believe that bizarre was a swear word.Anon
- When I was at primary school I thought you had to be at least 18 to swear.— Mike W