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
Asturias	[ə'stuəri:əs]
ÁLeifr	-	Ancient Scandinavian
Lyra	LIE-rə (English), LEE-rə (English)	Astronomy
Ihab	-	Arabic
Tiburcio	-	Spanish, Portuguese
Lys	-	Frisian