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?"
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi