wack is like crazy but it can also mean weird or unbelievable(in a bad way).
"bro john dyed his hair purple"
"thats wack"
"nope im being fr"

"johns project is wack"
"lmao yeah"
by wacKosix9 October 14, 2019
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Slang term for when you're really high after smoking a considerable amount of weed.
by Old Mate May 5, 2011
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adj,'publicly decreed to be not very good by those of taste and distinction. That which makes an effort to achieve the approbation of the cultural vanguard but fails due to a lack of authenticity'

The word is of uncertain etymology. It first emerged from the highly non-standard forms of ebonics used by New York rappers in the late 1980s and early 1990s.
Because Kriss Kross, is wiggedy wiggedy wack! (Kriss Kross, 'Jump', 1992)

...cuz it's a fact if you wack, you ain't sayin' jack! (Gangstarr, 'Check The Technique', 1991)
by Dan Bowen March 13, 2008
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bad,not good. sometimes used in freestyle battlin'.
"you're shit was wack!"
by brixx May 24, 2005
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used prodominently by the mafia - to kill; to kill without notice of others
Nicky and Tony wacked the drug lord
by Billko July 7, 2005
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Wack is another way of saying you suck,your crap etc
Dawg did you hear that kid rap he was wack!
look at there crew it's wack
by Lil Ace October 10, 2004
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A half White half Black person; white + black = WACK!
Dang that guy is Wack!
That Wack is on crack.
Let's wack the Wack.

by antheezie. June 13, 2008
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