keep your leaves on

1. Directed at a person or group acting crazy, loud, or socially/culturally inappropriate to behave in an acceptable manner.

2. Slang for keeping it together

1. "Bro, keep your leaves on and stop yelling at me."
2. To a large group about to get rowdy: "Whoa - keep your leaves on guys."

by Usul March 8, 2024