To tell you the truth, I'm a bit confused. In my mind, it meant at least two things (in "American English") 1.) A goofy person.. perhaps like a nerd, jerk (I am a Nerd and proud of it!) 2.) A part of the male anatomy. Gee, take a guess. I'm not sure if the second meaning is "real," or just a figment of my imagination. "Who you calling a dork?!"