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look up any word, like poopsterbate:
1. Something shitty, old or inferior.
2. An amazing Mindless Self Indulgence song.
1. Jim: Did you see Joe's gig last night?

Rick: Yeah man, that shit was wack!
2. My shit is wack! Oh oh oh, ho oh oh! Down to defy niggaz and my double-wide niggaz!
by BringThePineapples December 19, 2011
5 7
A group of spazzing, sparring canadians who PRACTICE all the time.
I see a wack of canadians hanging around there.
by CNADIAN October 06, 2010
2 4
used to describe:

1)any person who, regardless of reasoning, just can't pull the right moves to be with the 'in' crowd

2) any failed attempt at a cool stunt or complex pick-up line

3) an overly dressed or tacky person
1) After witnessing the new kids outdated dance moves, the clicke of 'cool' kids declared him wack and moved on to the next wannabe.

2) As the kid dusted himself off after failing at a double beer chug, one of the girls muttered to her friend" wow, that boy is wack!"

3)As the jeri-curled, headband wearing, oversized pendant bearing thirty year old made his way towards the party from his rusty el camino sittin on 20's, about fifteen people asked their friends 'who's this wack mo-fo?'
by The_Enigma_of_all_enigmas_1109 February 23, 2010
2 5
Wack, an african american slang word, oftenly used to replace "shit, bad, horrible, not cool, stupid" and any other generally negative words.

Wack, the sound something makes when such an object is either hit or is used to hit another object.

Wack, used to replace "place, put, drop"
"Dude, thats wack"
"Damn, this is wack"

As Kiwi hits Flamin over the head with a baseball bat repeatedly the room goes dark, all you can hear is a repetitive "wack, wack, wack" followed by a cry of pain.

"Just wack it there"
"Wack some of that sauce on my burger, thanks"
by Not Kiwi January 13, 2010
17 20
people who are garbage, nonsense, not cool.
" you saw that kid James Peterson? he's mad wack yo, dont talk to him.
by onomatopoeia1 December 27, 2009
2 5
the spot between your back and your crack.
the wack is that hairy spot at the bottom of your back before your crack.
by colorian July 02, 2009
5 8
something that is stupid
yo this movie is wack
by messy24 April 29, 2009
0 3