If you say
to someone 'what do you want?
', you are asking
them in a rather rude
way why they have come
to the place where you are or why they want to speak to you.
'What do you want!' she whispered savagely. 'Get out.'.
'Bernie's been on the 'phone.'—'What does he want?'
COBUILD Advanced English Dictionary. Copyright © HarperCollins Publishers