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1.
Playing basketball at a very high level similar to NBA Superstar Dirk Nowitzki. Its when you are just absolutely owning the guy guarding you...Dirkin' Off on his face.

Term Created By www.facebook.com/mikecheckmusic
Coach - "Can anyone step up and cover Nowitzki! hes been Dirkin Off on us the entire game!"
by SupMikecheck September 14, 2011