get out of bed on the wrong side(redirected from get up on the wrong side of the bed)
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get out of bed on the wrong side
To be in a particularly and persistently irritable, unhappy, or grouchy mood or state, especially when it is out of keeping with one's normal disposition. I'm sorry I snapped at you earlier, I think I just got out of bed on the wrong side today. Geez, the boss has been in a really bad mood all day. I guess he must have gotten out of bed on the wrong side!