blow one’s cool

(verb) to lose control of your emotions

Example Sentences:

The poor schoolteacher blew her cool and started crying when she won five million dollars in the lottery.

The workers complained to their boss because the manager was always blowing his cool over unimportant things.

Boyfriend: We need to talk.
Girlfriend: Okay.
Boyfriend: Please don’t blow your cool, but I think we should date other people.
Girlfriend: What?! I thought we were going to get married! I hate you!
Boyfriend: I asked you not to blow your cool!

Media:

Similar idioms:

1. flip out
2. get carried away
3. have a cow
4. blow one’s mind
5. blow one’s own horn
6. blow one’s top
7. blow off some steam
8. blow one’s lid
9. blow a fuse
10. blow it
11. cool one’s heels
12. rub salt into the wound
13. calm, cool and collected
14. blow