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Top definition
Sigma Mu Beta
The imaginary
fraternity
that members of
the Spartan
Marching Band
say they are apart of.
Sweet, you're a
sigma mu beta
girl eh? Where's your house?
I live
on Demonstration
Field
.
by
Academic Type
January 23, 2005
Get a
Sigma Mu Beta
mug for your barber Beatrix.