When I was a kid, it seemed kids knew all the swear words. I thought swear words were a secret code that only kids knew about. I was shocked the first time I heard adults use OUR words, and doubly shocked to find out that these words had correct spellings and even appeared in printed books.
A childhood belief about swearing

others believed things like this
- I thought there were some swear words so bad if you said them you would go to jail!— Mexicrat
- I used to believe that all four-letter words are bad words.Anon
- When I first heard the words "flea market", I actually thought it meant "selling fleas".Anon
- I thought "prison" and "prism" are the same words as each other.Anon
- I thought the word economical was actually two words: eek and omical.
— Nancy M. - I used to wander what my name would be in other languages. I thought that names worked the same way as words. — Simon