to meet up at an unusual spot
yo, post up at the mcdonlds on lawrence
by slr March 08, 2006

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Top Definition
To chill or stand at a spot (like a club or a street corner etc). To claim a spot. The term came from drug dealers on street corners, like light posts and street posts, and there you have it POST UP!
Yo lets post up right there where all the honeys with the big booties are.
by dada-ecko February 10, 2005

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Basketball term where a big man like Shaq goes down low (near the basket, establishes a good position, pins his man with his body and asks for the ball.
Yao Ming is hard stop from scoring when he does his psot up moves near the goal
by Eric B June 08, 2004

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To incite a fight, or to call someone out.
used when people are mad and desire confrontation.
Girl:(Greg) Dude you look like Justin Beiber!
Greg:awh, thanks,(:
Jim: Greg, what a fag,
Greg:Post Up then bitch!
by FlabergastABitch September 15, 2010

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To go hang or chill in no specific location.
Yo, let's go post up.
by Angela May 06, 2004

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A phrase commonly used by hipsters to indicate that they want to lean against (or 'post up') against a wall, preferably brick, to smoke a cigarette or drink a can of Pabst Blue Ribbon. Hipsters are led to believe that this is the cool thing to do. If there's no cigarette in hand, some hipsters replace the void with a can of PBR, the well known hipster beer. If they have nothing in hand, they fail at properly being a hipster. Generally, if caught in this scene, the hipsters would lift one leg up and rest the sole of their shoe against the side of the wall, completing their "cool" appearance. When suggested to 'post up,' a fellow hipster knows exactly what he/she is talking about and will usually agree to. It's the hipster thing to do.
Victor: Hey man, let's post up.
RJ: Alright man, let me grab my cigarettes.
Allen: Guys, I quit smoking.
Victor: Don't worry about it man, you can still post up with this can of PBR.
by buhfly March 08, 2010

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While in the gym about to squat, bench, or deadlift you get your gear set next to the rack making sure that no one else takes it and that the person doing bicep curls realizes its time to get out.
I walked into the gym to post up at the squat rack; the d-bag doing curls realized it was time to jet.
by Skulletbuster June 13, 2011

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means you and someone are gonna fight, y'all about to get em up.
if she talk about me or my crew one more time , we gonna post up after school.
by G0LD3N May 04, 2015

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