Noun - Verb
A bodily-function term that developed numerous idiomatic uses involving anger, dismissal, intoxication, and poor quality.
Refers to urine or urination and figuratively to anger, annoyance, poor quality, or wasting time.
Derives through French and ultimately Latin vocabulary associated with urination.
Its vulgarity comes from direct reference to bodily waste and elimination.
Used as noun, verb, insult component, intensifier, and idiom.
Pissed, Pissing, Piss off, Piss poor, Piss around
Especially versatile across British and American English, though pissed has different common meanings by region.