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A term used to describe a moment where a user (or any group of people) watches nothing but Smosh™ Productions videos on youtube, or any videos associated with Smosh as well.
Girl 1: "OMG I'm gonna go throw a Smoshfest at my house! Wanna come?"

Girl 2: Sure! Ian is so cute!"

Guy 1: "Uggh, what's with girls and boys with bowl haircuts?"

Guy 2: "Dont know, but let's throw a Smoshfest at our house!"

Guy 1: "OK! Teleporting Fat Guy!"
by crazyjoe30 July 06, 2011