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
Yonina	-	Hebrew
Alexis	ah-LEK-sis (German), al-ek-SEE (French), ə-LEK-sis (English)	German, French, English, Greek, Ancient Greek
Basileios	-	Ancient Greek
Masterman	MAS-tər-mən	English (Rare)
Amenemhet	ah-mə-NEM-het (English)	Ancient Egyptian
Ricard	-	Catalan