No, I'm not angry. I was just thinking about this word. Apart from Dr Grump, Roomy and me and anyone else with a UK/AUS/NZ background, I would reckon most readers would see "pissed"="angry".
Some non UK/AUS/NZers might know that "pissed"= drunk in UK/AUS/NZ.
So, I could be pissed+pissed posting here. Or I could just be pissed.
Or I could get pissed after reading a few posts.
Funny thing though, the synonym for "angry" how passed into Australian casual language. But we tend to say "pissed off" which is, I think, the usual full expression in American. Americans drop the "off" and still understand that it means "angry".
Okay, I'm going to piss off now
pissed - drunk
piss off- well you know.
Polite slang here says "nick off" instead of "piss off" but "piss off" is more satisfying when it has to be used
well piss on all of you