in Turkey, if you stab someone above the waist, it is considered an attempt at murder. To bypass the charge, but also teaching someone a lesson, a Turkish Revenge is when someone is stabbed below the belt, i.e. the ass. Coined in the movie "Midnight Express."
"...you can stab or shoot somebody below the waist but not above because that's intent to kill. So everyone runs around stabbing everyone else in the ass. That's what they call Turkish revenge." --Billy Hayes, Midnight Express