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2.
A vary useful and must-have application for Firefox (firefox.exe). It is the best way to surf the web seamlessly and a good way to rape anyone who attempts to sell you dumb crap you'll never want.
Guy1: Did you see that ad on your home page?

Guy2: Hell no! I gots me AdBlock Plus! So those posers can suck my Joystick!
by Splek November 13, 2008
 
1.
Verb:
The act of blocking an unpleasant image using the Mozilla Firefox extension, adblock.
I adblocked Jack's forum avatar because it was butt ugly and creeped me out.
by MechaTC May 05, 2005