JewJutsu is the art of conning someone out of their money, the art of being a jew. The etymology is as follows: Jew is aramaic or hebrew for being jew, and Jutsu is japanese and refers to the art or technique of something, like juujutsu--the art of softness.
Damn, i can't believe i fell for Bernie Madoffstein's shrewd deception and lost all my friggin' money...his JewJutsu was far too cunning for me.
Japanese Samurai: Get ready to face the wrath of my juujutsu foolish Jewish peon...You've robbed these rice-farmers long enough!
Mr. Goldbergstein: You may have your juujutsu, but you must face my JEWJUTSU!!!!