Male belf & nelf DK's, played by 12-15 yo's, ALWAYS with a really stupid name in a stupid (not funny, stupid) named guild, doing EVERYTHING possible horribly wrong, completely ignorant to any directives/suggestions, haven't got the slightest clue, not speaking a word of english except
"GOGOGOGG LOL FU NUBS" and due to the plethora of tools available perfectly capable to wipe the group in seconds.
It's profile is an angst filled young adolescent (think angry german kid video) with RL acceptance issues and now having the grasp on a knight of death with pointy ears and long hair - like evil Legolas from the movies, just even better!
That's what goes through many peoples mind when seeing that proverbial male belf/nelf. People playing female toons are usually fine. Probably due to rather looking to a attractive ingame race girl's ass, which indicates at least full adolescence, rather than male characters, which would more likely adhere to younger players, in the stage of reflectiveness from their own fantasy world and outside sources, where their main heroes are usually male.
That's my view on it, and I sincerely apologise if I made any actual psychologist turn in his grave with my theories