In America and Canada, usually coupled with "off", to mean extremely angry. Considered a swear word.
In the UK, Ireland, and Australia, pissed means massively drunk. Generally beyond everyday drunk, a specialist kind of drunk. Not so much a swear word.
America: "You crashed my car, man! I'm so pissed!"
UK/Ireland: "I just had 7 pints and I'm well pissed!"
Similar to bitching. Comparable to the excritment of waste.
Jesus, Tom has been pissing and moaning all night!
Australia's favourite word to describe what you get after work everday.
"I knock off at 4pm. Let's go get pissed."
that point in drunkeness beyond which you will remember little of what occured the night before
man i was so pissed last night... what the hell did i do... and where the feck am i??
Alchohol. Usually used to describe beer.
Pisshead 1: "What are you doing tonight?"
Pisshead 2: "Probably jus' get sum piss and chill watching the Rugby."
Pisshead 1: "I've been 'on the piss' since I woke up."
Slight intoxication through alcohol consumption. Typically characterised by a slight sense of drunkenness but none of the more advanced symptoms such as a reduction in inhibitions, loss of self control or inability to respond to questions. One step above sober on the scale of drunkenness and one step below steaming.
I was a bit pissed still when I arrived at work but my boss definitely couldn't have noticed.