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
Sabbas	-	Late Greek
Rada	-	Russian, Bulgarian, Macedonian, Serbian
Haleigh	HAY-lee	English (Modern)
Ayaulym	-	Kazakh
Kirabo	-	Eastern African, Ganda
Herry	-	Medieval English