Take a chill pill

Meaning

A sarcastic command to calm down. It implies that the other person is overreacting and needs to relax their intensity.

Sassy, dismissive

Used in a sentence

• I told my brother to take a chill pill before he started an argument with Dad.
• You really need to take a chill pill about the deadlines, we are ahead of schedule.
• Take a chill pill, it is just a game of backyard croquet.