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Mash Flob, noun.: A slang term coined over the Valentine's Day and Mardi Gras weekend in 2010 by the PlayStation Home community for a "flash mob," via a play on spelling/pronounciation.
Avatar 1: "Hey! Have you heard that there's going to be a mash flob in the Mall around 2pm?"

Avatar 2: "Yeah! We're all going to dress up in green and wear Mardi Gras masks, dance around the Home logo in front of the waterfall and do the Hero pose."

Avatar 1: "This is going to be EPIC AWESOME! See you there!"
by GlassWalls March 05, 2010
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