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Spelling wack "w-a-c-k" is wack as hell.
whack by Simon Says Go Fuck Yourself February 16, 2004
Related Words
a derogetory name for someone
Man, you whack
Whack by Brenda Donaldson May 31, 2009
Adjective. Crazy, insane, loopy, nonsensical, illogical, arbitrary, dumb.
EX1: Sarah Palin's resignation speech was the definition of whack.

EX2: Transformers 2's box office numbers are incredible! That's whack.

EX3: Nintendo hasn't ported Earthbound to the DS yet. That is completely whack.
Whack by smpoza July 4, 2009
The bac is whack!
whack by Anonymous May 2, 2003
Adulterant used to increase the bulk of illicit substances.
"The cocaine is not powerful enough. It contains too much whack and not enough product to satisfy the discriminating user."
whack by muttleydeed September 4, 2005
A term (Mainly in private schools in England) used to demonstrate the presence of either sexual intentions or a relationship between two other people.
Look! John and Shirley! Whack!
whack by John D.D Taylor April 29, 2007