Someone who is stupid, and who doesn't think before they act/speak. Spoonerism of "mentally retarded," and has come to mean someone who isn't retarded, but acts like it.
The inability to efficiently utilize the Washington Metro, mainly due to unfamiliarity with mass transit systems.
Examples of Metarded including riding the travel several stops in the wrong direction, switching trains at the Arlington Cemetery stop, and frequently missing,"doors closing, step back," by 30 seconds or less.
Ruler of Lake Titicaca. Rumored to have a bunghole that gets very angry if it does not receive toilet paper. Cornholio the Great is often seen walking around with his shirt over his head and his hands in the air, chanting songs about his power, and his bunghole.
"I am Cornholio! You do not want to face the wrath of my bunghole, for I need TP!"
Butthead: Shut up, Beavis! (uh huh huh huh)
Beavis: Um, okay. (heh heh heh heh).