2 definitions by Alcranky

Top Definition
A universal phrase that can be used in almost any situation. Usually in response to someone overreacting to something, or when someone does something bad.
"Jim: What the fuck are you doing?! Those are my chips!"
"Kevin: Dude. Don't be so mayo."

*Guy falls off of his skateboard*
"Guy watching: Dude. Don't be so mayo."
by Alcranky May 21, 2010
When someone sits idling at a green light while singing along to their radio. Originally coined by Buster-Ass Marcus of the Donkey Show in Eugene, OR.
"Oh man! I was so into that song, I just American Idled everyone behind me for 3 lights!"
by Alcranky November 10, 2009

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