blow (one's) cool

(redirected from blew someone's 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.
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blow one's cool

see under keep one's cool.
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blow your cool

lose your composure; become angry or agitated. informal
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blow one’s cool

tv. to become angry. I almost blew my cool when the dog wet my pants leg.
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blow (one's) cool

Slang
To lose one's composure.
See also: blow, cool