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1.
(v) To steal an idea from the internet. The act by which ideas are stolen, or the realization that your idea has already been thought of via the world wide web.
"Oh man, my word has been web jacked on Urban Dictionary."

"Oh wow, this is brilliant, let's web jack it!!"
by S. Truman Stone October 06, 2007
 
2.
Someone who has to insult people on the internet for lack of nothing better to do. The difference between them and me is that to them, it's not a joke.
Webjacks can piss up a rope.
by minari-naga March 24, 2005