ish ka bibble

Etymology
Borrowing from Yiddish, meaning "I should worry". The origins are disputed. One theory is that it is a corruption of the German nicht gefiedelt ("not flustered"). Another possibility is that it comes from German ich kaan bedibbert ("I am abashed"). Possibly a fake Yiddishism.

Phrase

 * 1) Why should I worry?; I don't care.