i am fuckin pissed 

the process of feeling angry
the result of injury or personal slight
the burning desire to murder your boss/peer/irritant
feeling: hot sensation near cheek, upper neck and lightness within the head followed by faint and despair

i am fuckin pissed already so don't expect me to give you a valid example

i am fuckin pissed by vik420 December 29, 2007

i am getting fucking pissed off 

The process of expressing your extreme annoyance at something.

I am getting fucking pissed off the train is late today, is always fucking late and will probably be fucking late tomorrow!

i am getting fucking pissed off by Uncle Wilf December 18, 2005