坐吃山空　

◎ 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”