Top Definition
A phrase usually stated during a basketball game in which one player embarasses another player by either vigorously blocking his/her shot or emphatically dunking over someone
(after somebody dunks over Kwame Brown)
Marv Albert: And (insert player name) puts Kwame Brown on the poster.

or simply

(in a mournful voice)
(player name)...........welcome to the poster
by Russell Baker May 26, 2008

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Bulletin board author
A user who authors a "post" in an online bulletin board.
by Jonathan Corley December 04, 2004

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Really hott chicks that just sit at parties, and do nothing but look hot, talk shit, text, dance for five seconds, and do absolutely nothing with guys. Compared to a poster, because just like a poster, you can only look at their inutile beauty.
Damn, look at dat poster over there doin' nuttin but postin'.

Look at dat poster sitting on another poster like a post-it note.

Man, you see that fine ass bitch over there sitting with her friends doing nothing but texting, ignoring guys, and gossiping. Yeah, don't talk to her she's a poster.
by Sonnybun April 25, 2010

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Parent over shoulder abbreviation. Used as a disguise for POS.
John: POSTER?
Jim: nope

Jake: POSTER
Jack: ok
by Fredy May 28, 2005

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Soft and offensive. Just like you.

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an ugly little boy that looks like a girl. usually has an ogre looking girlfriend, and loves to call people rude and aweful names. all together he is a bad person..
"OMG, dude you're being such a poster right now."
by olgga January 23, 2008

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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(n.) A hipster-poser. Someone who claims to be a hipster, but doesn't fully commit to the conventions associated with it. i.e. liking music before it was popular, rejecting social norms, drinking coffee from Starbucks, etc.
"Look at that poster, shopping at Old Navy. He used to be cool, man." *drags on cigarette*
by PrimitiveMan June 21, 2011

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Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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another form of the word cool; to approve of
I just saw that movie and it was totally poster
by jboev April 12, 2007

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The Urban Dictionary Mug

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt