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
Che	CHE	Spanish
Loviatar	-	Finnish Mythology
Taavi	TAH:-vee (Finnish)	Estonian, Finnish
Gusti	-	Indonesian, Balinese
Zenais	-	Ancient Greek
Les	LES, LEZ	English