dweebleheimer

Basically means the same thing as "Dweeb"- Someone who is clueless in life, a form of ignorance and stupidity, a person who "doesnt get it", also can be used for a person who is deemed "pathetic" in his actions in life.

Also Ryo Sakazaki from SNK's Art of Fighting and King of Fighters says it in one of his quotes, insulting his opponent.