A person who you don't normally associate with except for on weekends. Also a person who you don't normally associate with unless they have something to offer.
Girl #1: "I don't have any money for the bar this weekend..."
Girl #2 "OH! Call up your weekend friend, she'll foot the bill!"
Girl #1: "Good idea!"
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).