【喻】【貶】經手買東西時暗中克扣錢款為己有（一般是少量的）。買啲咁多嘢佢都要打斧頭嘅。（買一丁點兒東西他也要揩油。）

(phrasal verb) to get a rake off by secretly pocketing the part of the money that is meant for a specific purpose or the earnings from a transaction