khabaret

Short for Khabareh Marg-et (which literally translates to "news of your death"), Khabaret is a condensed version of sharing with someone your extreme distaste for their being. The translation of the phrase itself is a condensed version of such a sentence as "I look forward to hearing of the news of your death" which is a uniquely-phrased curse in the Persian language.

Man 1: "Watch we're you're going @$$hole."
Man 2: "Khabaret, koskesh!"