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1.
One who use is quirky and nerdy yet uses his or her intelligence as a social tool
The guy who's wearing the nerdy outfit that still looks cool and has a great personality - thats a dorknob!
by Steven Chandler May 11, 2008
 
2.
hairstyle for guys where a ponytail is brought back to it's base and banded again, thus creating a small bun at the base of the skull. Often to be seen worn by dorks, hence the name.
Tony's got a new hairdo. He's just recurved his ponytail back, and made a dorknob
by lovecraft69 May 21, 2009