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
Steffen	SHTE-fen (Low German)	Low German, Danish, Norwegian, Dutch
Dennis	DEN-is (English), DE-nis (German), DEN-nis (Dutch)	English, German, Dutch
AuŠRa	-	Lithuanian
Paden	PAY-dən	English (Rare)
Theodotus	-	Ancient Greek (Latinized)
Jayanti	-	Hinduism, Indian, Hindi