A short, sharp adjective deried from the word cowpat or cowshit. Is used most effectively when describing something that is utterly terrible or rubbish.
Terry: I am clearly the best footballer in the region!
Josh: Nah mate, you are so PATT!
Jack: That goal i just scored was so good. :)
Jordan: You blasted it from all of 2 yards like always. You are PATT!
Ryan: I will clearly beat you on FIFA 11, Tom. I always batter Joe like 3-0.
Joe: Why lie?
Ryan (after losing to Tom 4-0): Ok, perhaps I am PATT after all.
Tom: Too right mate.
Ryan: :'( (throws controller on floor)