Top Definition
a plural phrase implying that a group of things/people/places or a plural noun is cool, awesome, etc.

Jasmine: What was your opinion on those hot mix tapes?
Billy: dem WACK!

Jasmine: The Mets played a great game tonight.
Billy: Yeah, dem totally WACK!
by Molly-O May 27, 2005
1 Word related to dem WACK!
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