Dork is a derogatory term for someone with few social skills, usually interested in nerdy activities and immediately makes a poor impression through their lack of social aptitude.
NOT a nerd
, though one can be a dork and a nerd. A dork would be a nerd who is immediately and obviously not a social person.
NOT a geek
, who enjoys the same activies as a nerd but posseses standard or above social skills. Geek and dork are mutally exclusive.
"Look at that guy with the braces and the laptop. He's such a dork." -Prep
"I could tell before I talked to him, that guy was seriously DORK." -Someone observant
"Even the geeks won't socialise with that dork, he's so laaame" -Typical Chavette