坐吃山空

zuòchī-shānkōng

[sit idle and eat, and in time your whole fortune will be used up; use up one's resources without working; eat one's head off in idleness] 只消费, 不生产, 纵然拥有金山银山一样的资财, 也会吃空的。 亦作"坐吃山崩"