Cool your jets
Meaning
To calm down, relax, or reduce one's excitement or anger, especially when someone is being overly eager or agitated.
Origin
The phrase "cool your jets" rocketed into the English language in the mid-20th century, propelled by the advent of jet aircraft. Early jet engines, with their immense power, generated tremendous heat and could overheat if pushed too hard or run without proper maintenance. The literal instruction to "cool the jets" was vital for pilots and ground crews to prevent damage and ensure safety. This technical command soon soared into common idiom, metaphorically urging excitable or angry people to calm down and regain control, just as a pilot would temper a roaring engine before it reached a dangerous boiling point.
Examples
- You're getting ahead of yourself; cool your jets and let's discuss this rationally before making any big decisions.
- Before you make any rash statements, I suggest you cool your jets and think about the consequences.