Definition of do something until (or till) one is blue in the face in English:

do something until (or till) one is blue in the face

phrase

informal
  • Put all one's efforts into doing something to no avail.

    ‘she could talk to him until she was blue in the face, but he was just not hearing’
    • ‘Obviously, we could sit here and talk until we're blue in the face about how wonderfully they play the game.’
    • ‘I complained and complained and complained until I was blue in the face.’
    • ‘I searched every file I could till I was blue in the face, and got absolutely nowhere!’
    • ‘I could tell him till I was blue in the face that we had to leave, he does not understand, he is not from here.’
    • ‘I just sulked all the way home cussing and swearing till I was blue in the face.’