Usually used to respond to something crazy. Commonly found in the expression, "That`s wack!"
"He killed his cat and fed it to his dog" said Dan.
"That`s wack!" his friend responded.
by leinad February 15, 2005
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when something or someone is crazy. is crazy
"Yal are so wack!"
"Wiggidy wack!?"
"No, just regular type"
by fran xox August 9, 2004
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You see a penguin behaving in a strange manner:
'Yo man that Penguin is wack!!!'
by WaSpY September 23, 2004
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When something goes or is worng. Also used in place of fucked up.
1)Man, that shit is wack!
by Americus Nationel October 27, 2004
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this is a two meaning word and the context can change the meaning.

wack can mean something that is a lame, wanabe thats just nuts. "who said were wack? you take it back"

but it can also be used in the concept of dope or sick "man that is wack, where did you get it!"
negative: "your dancing is as wack as your dumb haircut fool"

positive:"man thats wack how did you do that!"
by wackmeister g May 18, 2009
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Lord Meth in the battle thread
Lord Meth's rhymes are wack
by emseed September 7, 2008
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