blow cool(redirected from blow her cool)
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blow (one's) cool
To lose control of one's composure, temper, or nerve. He really blew his cool when the waiter dropped his food. I really blew my cool during the interview.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
blow (one's) coolSlang
To lose one's composure.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.