pay the piper
pay the piper or pay the fiddler {v. phr.}
To suffer the results of being foolish; pay or suffer because of your foolish acts or wasting money.
Bob had spent all his money and got into debt, so now he must pay the piper.
Fred had a fight, broke a window, and quarreled with his counselor so now he must pay the fiddler.
Compare: FACE THE MUSIC (2).
(From the proverb "He who dances must pay the piper (or the fiddler).")
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Source: A Dictionary of American Idioms