: Specifically used when someone's anger is "boiling over". Keep your shirt on : An older idiom for staying calm. Pop Culture Connections
The expression is versatile and typically used in three scenarios:
: A classic alternative for advising patience. 1. Cool Your Jets
: 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.").
or Take a chill pill : Modern, very informal ways to say the same thing. : Specifically used when someone's anger is "boiling over"
The phrase emerged in the during the mid-20th century, a period deeply influenced by rapid developments in aviation and the "Space Age".
: One of its earliest recorded uses is in the 1952 novel Stand by for Mars! from the Tom Corbett, Space Cadet series, where a character is told, "Cool your jets, space creep!". : To advise caution when someone is acting
: To stop someone from getting overly worked up or angry (e.g., "Cool your jets! It's not worth fighting over.").