Also known as: Postin' it up, rock-it-hard, blockin' hard, etc.

The act of one or more people assuming random gangster poses, usually poses that originated from Run-DMC in the 80's. Crossed arms, gangster hats, bandannas, and Gumball 3000/Puma's and 13-14 year old girls are a must to correctly "Post it up."
Kenneth, Seth, and Jeff post it up hard.

Jeff tries to get girls to post it up with them. And it never works.
by Jeffrey Giraffe May 03, 2007

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