Music·Posted on Aug 12, 2010Crazy Karaoke Guy Hates InfidelityCarrie Underwood's song "Before He Cheats" is pretty aggressive on its own, but this guy takes it to a whole new level.by Tanner GreenringBuzzFeed StaffLinkFacebookPinterestTwitterMail View this video on YouTube Sing it out, crazy karaoke guy. Sing out all that pain and heartache.