blow (one's) cool

To lose control of one's composure, temper, or nerve in a given situation. He really blew his cool when the waiter dropped his food. I really blew my cool during the interview.

Common Names:

Name	Pronounced	Usage
KryŠTof	-	Czech
Esa	E-sah	Finnish
Nanuq	-	Native American, Inuit
Bartolomej	-	Slovak, Croatian (Rare)
Rolande	-	French
Benton	[ben'tən]