Top Definition
Sucky, Stupid, things out of the ordinary. Ugly.
1. Damn, thats some whack ass hair.

2. Wow, this is a whack ass definition!
by punkrockpat10 April 18, 2010
Synonyms: weird, crazy, out of the ordinary, dumb, stupid

Singular: whackass
Plural: whackasses
Whackass is a general term to describe someone you do not like:
Madelyn: Is that Tyler's ex?
Carrie: Yeah she is a whackass, in fact all they are all whackasses.
by NEw Handle May 15, 2016
When something is behaving inexplicably and unpredictably.
Eric, I'm tired of working on this whackass code.
by gdus May 17, 2011
when someone is whack, just a harsher version of it. comes from root word whack which means dumb or a word to define someone who is obviously exaggerating. can mean wrong. usually meant in a playful sense.
joe: i shot the president !!!

bob: man, you such a whackass.
by mmbaby. May 26, 2009
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