Dic: piss off, PO-ed

piss off

1. PHRASAL VERB
If someone or something pisses you off, they annoy you.[INFORMAL, RUDE]

• It pisses me off when they start moaning about going to war.
• I was really pissed off.

2. PHRASAL VERB : V P
If someone tells a person to piss off, they are telling the person in a rude way to go away.[BRIT, INFORMAL, RUDE]

.... Cobuild

• It really pissed me off that they didn't help me out when I needed it.
• I think everyone is pissed off about the parking problem.
• Piss off, Chris, and stop flooding my e-mail with garbage!

.... http://idioms.thefreedictionary.com/piss+off

cf.
PO'ed : adj. Informal. [P(iss) O(ff) + -ed.] Extremely irritated or angry.

... The American Heritage, http://www.thefreedictionary.com/PO'ed