what more do you want - jam on it? used to say that someone should be grateful for what they have or have been offered, and not demand something better 知足常乐(用来表示某人应对其所拥有的或别人所提供的表示感激，而不应当得寸进尺) They've given him a holiday in Italy. What more does he want - jam on it? 他们已经让他到意大利度假。他还想要什么呢?知足吧!