keep your hair on

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

冷靜, 別激動

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.
冷靜點,沒必要這麼激動。
Hey, keep your hair on! It was just a joke.
嘿,別激動!那只是個玩笑。