You´re feeling depressed or tired because it´s Monday - the start of a new week.
to have "blue blood" - what do you think this might mean?
to be from royal or noble heritage (i.e. a member of the aristocracy or the monarchy)
"I´ve been complaining about that problem until I´m blue in the face, but nothing ever happens!" What does "do something until you´re blue in the face" mean?
To do/repeat something for a never ending period of time / until you´re totally exhausted (without success or resolution)
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