::Probably some Yiddish or dialectal variant of "Leck mich am Arsch!". (Lit. "Lick me in ass!", in meaning it's something like "Bite me!" or "Kiss my ass!".) No offense, but your translation would have a very strange word order for a German sentence. I guess the point is that "Kocker" is Yiddish, "Kacker" is german...   

 

Toxicity label: obscene