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
Bernardina	ber-nahr-DEE-nah	Italian
Nimue	NIM-oo-ay	Arthurian Romance
Gorka	-	Basque
Alec
HÜSeyİN	-	Turkish
Clarissa	klə-RIS-ə (English)	English, Italian, Portuguese, Spanish