Till they're blue in the face - Idioms by The Free Dictionary
till (one) (is) blue in the face (redirected from till they're blue in the face)
till (one) (is) blue in the face
Of something vocalized, for a great or indefinite length of time. You can complain about it till you're blue in the face, but we're going to your grandmother's for Thanksgiving 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 for drinks and be the best of pals.
(do something) till you’re ˌblue in the ˈface (informal) (do something) with a lot of effort and for a very long time without success: You can argue with John till you’re blue in the face, he’ll never agree with you.
References in periodicals archive
That said, if the 6-0 at the Etihad is a form guide they could rub the green till they're blue in the face
and it wouldn't close the gap with Manchester City (Carabao Cup Final, 4.30pm).
The HSE can bang on till they're blue in the face
about rapid response cars and emergency teams.