I like how we can find unintentional humour in yank telly when characters say they're "pissed." To us, annoyed is "pissed
off". "Pissed" by itself to us is drunk. Although there are a million more common colloquialisms... fucked, skulled, twatted, bladdered, muntered, slaughtered, shitfaced etc.
How vulgar is the word "cunt" over there? I've heard people greeting each other as friends by saying, "Ow ya doin, ya old cunt, ya?"
Cunt is the worst word there is. However, if you're a person that is not offended by swearing and neither is your friend, then it's common to call them cunt in jest. Or any insult in jest. In fact, you often call your mates "cunt" and a complete cunt "mate." As in "oh, thanks mate" when you see some cunt parking haphazardly and blocking you in.
But yeah, I have mates I sometimes greet with "cunt." Or "soppy bollocks." Or "queerbait."