What's the matter with (one)?

What's the matter with (one)?

Used to indicate disapproval of or disgust with one's words, actions, or behavior. We finally get invited to a nice dinner party and you have to go and act the fool—what's the matter with you? A: "I heard she got fired for cheating the company out of nearly $20,000." B: "Seriously, what's the matter with her? She gets paid a ludicrous amount of money as it is!" I can't believe I said something so stupid during my interview. God, what is wrong with me?
See also: matter
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