Can I just add that the internet promulgates a meme that in Scotland and Australia "cunt" is used all the time in spoken discourse.

It isn't.

It obeys the McNaughton rule: would you do it (say it) in front of a policeman (your mother).

It's used for humour, by a small minority. It's used to offend routinely. It's not normal to ask for things by saying "oi, cunt.. pass me the salt"

If you want an american version of this, propose people start casting the same meme with the N* word. I think you'll find this falls flat.