1. Cool Your Jets May 2026

: To advise caution when someone is acting impulsively out of enthusiasm (e.g., "Cool your jets, Sarah. Make sure you have the job offer in writing first.").

: Specifically used when someone's anger is "boiling over". Keep your shirt on : An older idiom for staying calm. Pop Culture Connections 1. Cool Your Jets

The phrase emerged in the during the mid-20th century, a period deeply influenced by rapid developments in aviation and the "Space Age". : To advise caution when someone is acting

: To tell someone to wait when they are rushing a process (e.g., "Cool your jets—the results won't be ready for another hour."). Common Synonyms Keep your shirt on : An older idiom for staying calm

or Take a chill pill : Modern, very informal ways to say the same thing.

: To stop someone from getting overly worked up or angry (e.g., "Cool your jets! It's not worth fighting over.").