What a nerve!
what (a) nerve
An expression of shocked disapproval regarding something someone said or did. They thought I would just go along with their plan to cut my pay while taking on more responsibility. What nerve! What a nerve you've got—how dare you suggest something so horrible!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
What (a) nerve!
exclam. What insolence!; How rude and presumptuous! Did you hear what she said? What nerve!
See also: what
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.