until one is blue in the face

adv

(duration, idiomatic) For a hopelessly long time; used especially in respect to discussing, explaining, insisting, etc.

I can argue with him until one is blue in the face.

意味（1）

(duration, idiomatic) For a hopelessly long time; used especially in respect to discussing, explaining, insisting, etc.

You can explain it until you're blue in the face, but he will never understand.