tail-wagging

The dog's tail wagged.

狗尾巴摇动着。

The tail wags the dog.

上下颠; 物掌权。

The dog ran out with its tail wagging madly.

狗跑了出来，疯狂地摆着尾巴。

In this company the workers tell the manager what he can and cannot do. It’s a real case of the tail wagging the dog.

这个公司里是雇员定经理的职权范围，真是上下颠。