Originated from the word whacky; short for whack.

1] Something stupid.

2] Something that isn't interesting.

3] Something that is uncool.
1] "That kid is wack as hell."

2] "I think that show is wack."

3] "Tell your brother that he is too wack to get in this ride"
by +Skep'tiKaL- March 20, 2007

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just plain stupid, a crazy (not mentally) person
tracey: im going to walk up this skyscraper

rob: you so wack...
by ben nwankwo April 16, 2005

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Not funny at all, also can be used in the same text as jake or lame
Niggaz who think they are hard are wack
by Malcolm aka Q April 09, 2003

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the offspring of a white and black person
Example: "(during the ultra-sound of newborn)"

(blind)Mr.Brown: wait ur white!
Ms.Brown: Yes
(blind)Mr.Brown: Shitt! our sons gonna be wack!
by redstar69 July 26, 2007

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not cool, played out, sucks

"That's hellza wack" "Your hecca wack"
by u DonT nOe MeEh November 07, 2005

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1. Of low quality, not good, poor, etc.

2. Also used to mean the opposite of it's original meaning, like bad or shit is commonly used (i.e. Wow man, that's some bad moves ya got.). Upstate New York colloquial
That's new car o' yours is wack, how cool.
by BillG February 15, 2005

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An Antarctic word meaning weird.
You see a penguin behaving in a strange manner:
'Yo man that Penguin is wack!!!'
by WaSpY September 23, 2004

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