在商场混迹多年，这人十分有钱，但却是个铁公鸡。

[误] Being in business for so many years, he has made a lot of money, but he is as mean as an iron cock.

[正] Being in business for so many years, he has made a lot of money, but he is as mean as a louse.

注：louse 指“虱子”或“寄生虫”。这种不生物什么都要从别人身上索取，用它来比喻吝啬也是十分贴切的。