keep your hair on
US /kiːp jʊər hɛər ɒn/
UK /kiːp jʊər hɛər ɒn/
1.
落ち着く, 怒らない
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.
落ち着いて、そんなに興奮する必要はないよ。
•
Hey, keep your hair on! It was just a joke.
おい、落ち着いて！ただの冗談だよ。