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The vehicle of "that Mustang guy" who is obviously better than you because he has a Mustang. Every story or conversation eventually reverts to his Mustang which more often than not has "500 horsepower." Muff-tangs are usually associated with tools, Affliction/Ed Hardy clothing, and slightly sideways flat-brim hats on white guys.
"Did you hear that fag with the Ed Hardy shirt talkin about his Muff-tang again?"
by GRANYshifterTSi December 16, 2009
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