«فِي كُل عِرْسْ لُهْ قُرْصْ»

The saying describes a person who turns up wherever there is something to be gained and always leaves with a share. The wedding stands for any event or venture, and the round loaf stands for the small benefit such a person manages to collect each time.

The emphasis falls on habit and eagerness, not on any single act. The speaker portrays someone who never lets a chance for profit slip by and treats every situation as an opening for personal advantage, however unrelated that situation is to them.

Use it of someone who gets something out of every occasion, deal, or gathering, whatever its purpose. Because it implies opportunism, aiming it at a specific person reads as criticism or a jab; it may be said with exasperation or wry teasing among people who know the person well.