keep your hair on

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

rustig aan doen, kalm blijven

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.
Rustig aan, je hoeft je niet zo op te winden.
Hey, keep your hair on! It was just a joke.
Hé, rustig aan! Het was maar een grapje.