keep your hair on

US /kiːp jʊər hɛər ɒn/
UK /kiːp jʊər hɛər ɒn/
"keep your hair on" picture
1.

진정하다, 화내지 않다

used to tell someone to calm down and not get angry or upset

:
Just keep your hair on, there's no need to get so worked up.
그냥 진정해, 그렇게 흥분할 필요 없어.
Hey, keep your hair on! It was just a joke.
야, 진정해! 그냥 농담이었어.