get up on the wrong side of the bed
Verb
Meaning
get up on the wrong side of the bed (third-person singular simple present gets up on the wrong side of the bed, present participle getting up on the wrong side of the bed, simple past got up on the wrong side of the bed, past participle (UK) got up on the wrong side of the bed or (US) gotten up on the wrong side of the bed)
(idiomatic) To feel irritable; to be in a bad mood; to have a bad day from the start, for no particular reason.
I think my boss got up on the wrong side of the bed this morning. He's been grumpy all day.
Synonyms
get out of bed on the wrong side
wake up on the wrong side of bed
wake up on the wrong side of the bed