Showing signs of exhaustion or strain. Often used in the phrase "till (one) (is) blue in the face." You can complain about it till you're blue in the face, but we're going to your grandmother's whether you like it or not.They are such strange friends. They'll argue till they're blue in the face, then they'll go out to eat and be the best of pals.Just give it up. You're blue in the face from trying to get Terry to change his mind, and your efforts still have had zero impact on him.
Exhausted from anger, strain, or other great effort. For example, You can argue until you're blue in the face, but I refuse to go. This expression alludes to the bluish skin color resulting from lack of oxygen, which presumably might result from talking until one was breathless. See also under talk one's arm off.
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