eat cake; take a cutUsually means “eat cake” literally. In informal contexts, it can figuratively mean taking an illicit share or commission, especially in discussions of corruption. The intended meaning depends on context.
TH: โครงการนี้แพงเกินไป สงสัยมีคนกินเค้กกันหลายคน
EN: This project is far too expensive; I suspect several people are taking a cut.