In some inner city cultures, especially in the city of Philadelphia where I lived, "cuss" words are just part of the language, like normal adjectives. I don't bat an eye when I hear four letter words peppered in someone's talk. And I've heard just as much "cussing" in the corporate world in the Philly area as I have on the city streets.
Because I'm the Lord's child, He sweetens my language with His grace. Yet there are words I sometimes use that could raises eyebrows with some Christians because in my heart they are not "bad" words. For instance, when someone is mad, they are "p- off". To me, that's not a bad word. Or "sheesh" or "dang it" and stuff like that.
It's what is in a person's heart that defiles him or her. And it's not words, it's motives that God puts in check. Any words we say out of anger, hate, jealousy, impatience, etc. are bad words, even if they aren't necessarily "cuss" words. But if someone is using "bad" adjectives in a regular conversation, it doesn't make me cringe at all. Unless of course someone is deliberately trying to disturb people with vulgarity and sexual innuendos. I don't appreciate that.