Piss

Piss is slang, one of the seven dirty words, which can mean the following:

• Piss can refer to urine or the act of urination.
• Piss can refer to alcohol or being in an intoxicated state.
• "Piss off" can mean "Go away!"
• To 'piss someone off' is to make him angry.
• To 'piss something away' is to use it up without having anything to show for it.
• A 'piss-up' is a party involving lots of alcohol.
• A 'piss-take' is similar to a parody.
• To 'take the piss out of' someone is to make fun of him.
• To 'take the piss out' on someone is to get angry with him.
• A pisser is a disagreeable person.
• "Piss me off" = Make the speaker angry

I'm pissed means "I'm drunk" in British English and "I'm annoyed" in American English. This was commented on in a South Park episode in which an Englishman says:

Leave it to Americans to think that "no" means yes, "pissed" means angry, and "curse word" means something other than a word that's cursed!!

• Former U.S. President Lyndon B. Johnson is reported to have said of FBI director J. Edgar Hoover, "Better to have him inside the tent pissing out, than outside pissing in."
• U.S. Vice President John Nance Garner famously described the office as "not worth a pitcher of warm piss".

Word Origin: 1250-1300 ME (Middle English) pissen OF (Old French) pissier.