This is a Military term used to tell a subordinate to shut his pie hole.
Sgt.: Sir,I believe you are an Imbecile, Lt.
LT: You better Stand Down or I will have you standing tall before the man, Sgt.
by Mojo Maniac July 21, 2008
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In times of war, exhausted combat soldiers requiring brief periods to rest and recover are removed from the field of combat to a place of relative safety and security. The military term, Stand Down, is used for such an action.
Stand down, geek! Stop playing Super Mario on the front lines!
by ProStaff January 26, 2005
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When two or more people are so courteous to one another, it becomes painful.

Particularly common with food at restaurants, or when opening doors for others.
"Parky, would you like this last dumpling?"
"No, please. You have it."
"Parky, I insist. Please eat it."
"I couldn't possibly take that last dumpling. Please, it's yours..."
Ad nauseam.
WAITER: "Welp! It looks like we've got ourselves a Mexican Stand-Down!"
by Woofington Von Barkshire October 17, 2017
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A term usually used after a good comeback has been made.
Lisndey: *whispers* I heard Becky fucked Isacc and got AIDS.
Surrounding basic bitches: oooooo
Becky: Bitch, you still talk loud as fuck when you whisper. Yo drunk ass snapchated me a photo of you suckin Samuel's dick.
Lisnday: that... That's not-
Becky: Bitch stand down.
by JakeRyan277 May 13, 2015
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If a stand-up comedian is not at all funny, that he's booed down from the stage.
It's not funny at all, it is rather a Stand-down comedy !!!
by VlarolCarol The First July 12, 2017
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A professional, on stage in a comedy club, who suddenly understands there is no humor in our predicament, nowhere he can take us that is any more absurd than the facts, and walks off.
Oh, he had material ... Mexico building a wall to keep Americans out... Ivanka's first act as president, pardoning her imprisoned daddy, children dying so the school cafeteria staff could return to work... but he saw that we had fallen beyond the reach of laughter. He was finished, a stand down comedian, and others would silently follow.
by Monkey's Dad July 15, 2020
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