“Cunt” is about the last word possessing any power to shock, especially here in America. While the rest of George Carlin’s “Seven Words You Can Never Say On Television” list from 1972 – shit, piss, fuck, cocksucker, motherfucker, and tits – are now, to various extents (and particularly on cable) part of the public vocabulary, you’ll still rarely find the c-word used.
This does, of course, only apply in America. A lot of the time, it just doesn’t sound right when Americans use it, such as the line in Way of the Gun: “Shut that cunt’s mouth or I’ll come over there and fuckstart her head!” or when Bill tells the Bride in Kill Bill, “Every once in a while, you can be a real cunt.” These examples is like children, who know a bad word or two, but have no concept of how to use them correctly, only that they shock adults. That’s a sad waste of the power inherent in “cunt”.