keep your hair on
US /kiːp jʊər hɛər ɒn/
UK /kiːp jʊər hɛər ɒn/

1.
tenang, jangan marah
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.
Tenang saja, tidak perlu terlalu emosi.
•
Hey, keep your hair on! It was just a joke.
Hei, tenang saja! Itu hanya lelucon.