get up on the wrong side of the bed

Cultural  

1. To act unpleasant because the day got off to a bad start: “You'd better avoid the boss today; she got up on the wrong side of the bed this morning.”

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Example Sentences

The candidates’ challenge will be to urge this without making Trump enthusiasts, whose support these candidates need, even more enraged than such enthusiasts are when they get up on the wrong side of the bed, which they do daily.

From Washington Post

We get up on the wrong side of the bed sometimes.

From New York Times