Greyhawk is a very retarded name that is unoriginal and was stolen from some old war movie. It is also a Dungeons and Dragons campaign setting. When this name is used by a player in a FPS this tells you that one, they have no skill, and two, they are the offspring of two nubs, yes a nublet.
"Greyhawk is a nublet.."
"HELL YEAH! HE IS ALSO NOT FUNNY!"
"HEY! You forgot he sucks at Magic!"
"Remember when he used to have Counter-Strike skills?"
"Yeah but then he started going out with Asha :("