«اِلْحَرَامْ يِتَّاكِلْ بِإِيهْ؟»

The saying is a rhetorical question that recoils from the idea of consuming anything obtained unlawfully. Here ḥarām means ill-gotten wealth or livelihood, not forbidden foods. It treats such gain as so repugnant that a person should be unable to bring it to their mouth at all; it expects no real answer.

In practice it works as a moral rebuke aimed at people who profit through theft, fraud, or other illicit dealings. Here "eating" means living off the proceeds broadly. The speaker expresses astonishment that anyone could comfortably enjoy what was wrongfully taken, implying that honest people would find such benefit sickening rather than satisfying.

Say it to condemn someone who lives off dishonest earnings, or to explain why you refuse money, food, or favors of doubtful origin. It carries moral reproach and a note of disgust, so it suits pointed criticism rather than light teasing.