What's on your mug?

Exp. To give something a negative stature.

"Man, that is wack, yo!"

By aerosol

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

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

bad,not good. sometimes used in freestyle battlin'.

"you're shit was wack!"

By brixx

used prodominently by the mafia - to kill; to kill without notice of others

Nicky and Tony wacked the drug lord

By Billko