the tail wags the dogSaid of situations in which a minor part is in control of the whole
[TahlilGaran] Dictionary of Contemporary English ▲
tail wags the dog Said of situations in which a minor part is in control of the whole.
He is just a minor employee at the firm, yet he gives everyone orders, a case of the tail wagging the dog. [TahlilGaran] English Idioms Dictionary ▲