Pejorative term for a University of Michigan fan, also known as a Wolverine
. This is an apt descriptor for two reasons: First, wolverines are stocky and muscular rodents
known for their nasty demeanor and musky stank, and are literally of the weasel family, Mustelidae. Second, and even more accurate, the term weasel is commonly applied to those of low moral character whom are typified by wheedling, whining, and overzealous aggression in pathetic attempts to gain unfair advantage in sport, business, and personal dealings.
Weasel: "Dude, what a rip off! Michigan had the game in the bag...if not for the crappy officiating and that touchdown Sparty scored after the clock ran out!"
Sparty: "Uh, don't be such a weasel. Michigan was behind by 28 points and didn't have a chance."
Weasel: "Yeah sure, you're just jealous because you didn't get into what we call 'the Harvard of the Midwest.' You know I love the maize!"
Sparty: " Actually I did get in.. to Northwestern, and the University of Chicago. And please stop whining; I'd take you more seriously if you didn't have that corn cob buried in your ass to the hilt."