(do something until/till) somebody is blue in the face
snažit se, jak to jen jde, ale zbytečně
Mr. Clinton may say that he wants to concentrate on domestic policy until he is blue in the face; the truth of the matter is that in a federal system such single-mindedness will not get him far, because most domestic policy is reserved to state and local governments.
We come back to this theme of the double witness, by the Holy Spirit and ourselves, which the New Testament continually brings before us. A preacher can talk till he is blue in the face, but he can never bring anyone to faith in Christ.
It wasn’t your fault that Mark got lost in the Sahara was it? You can tell them till you’re blue in the face and they still do what they want. It’s the same with men as well isn’t it?
We can make laws and regulations about pollution or wildlife trade until we are blue in the face, but without enough money for enforcement they will not be effective. In animal welfare and conservation the problem is international and immense.