Someone who is (or tries/works very hard to be) the most popular person on the forum or message board they frequent. Often, the Net Cack will attract other Net Cacks. It's easy to spot a Click of Net Cacks, because they often all stick together on every subject, attack people together - as a group, tend to have this energy of 'inside joke' in their posts, and/or are rude, obnoxious, stuck up, ignorant, and verbally abusive.

The Net Cack is usually quite unpopular in their real life, has very few real life friends, is hard to get a long with, and generally unhappy.

Often, the Net Cack is also morbidly overweight, and/or has a hideous appearance, leaving them with little opportunity to work their way up the social ladder in the real world. Thus, bringing them to the Internet, where everyone has the chance to be SOMEONE.
I was really enjoying that particular message board, until the blasted Net Cacks started taking over.
by anonymous May 31, 2005
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The North Cackillac, North Carolina. The North Cock It Back
Im chillin in the boro in the North Cack.
by S@Y November 25, 2008
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An adult female with braces and a face like a gremlin, who you are afraid might try to suck your cock in your sleep.
Andrew, that cack gnabbler is not sleeping here tonight.
by PhuzzyLogic July 13, 2009
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check out Dale, he is eatign a horse cack sandwich. he must be out of money.
by Juan Epstein June 5, 2006
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It means an awkward or inept way of doing something; originally meaning left handed, stemming from cultures that use their right hand to eat and their left hand to wipe their behind.
That shelf you put up looks a bit cack handed
by The Acid Drop Kid October 19, 2007
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There are no CDs! Oh ball-cack!
by Ian Chode October 9, 2003
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