I don't think George Mason has one, since we're not a D-I school and football is a club-level sport. Honestly, I've not heard of a basketball rivalry since they've only been really good over the past 3-4 years. In my experience, most rivalries begin with sports and then spread to organizations.
Wouldn't mind having a local chapter that would push them to be "better".....something to encourage them to work towards COE levels, ya know?
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Elyssa Brecher
Mu Mu Fall '95; Advisory Chair - Alpha Delta Delta (GMU)
"There's only us, there's only this. Forget Regret, or life is yours to miss. No other road, no other way. No day but today." Rent
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