have a fat head

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have a fat head

To be conceited, arrogant, or self-aggrandizing. Cheryl has such a big head on her, all she ever talks about is herself. Janice has had a bit of a big head ever since she got that promotion.
See also: fat, have, head
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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