Between this guy and Mark Gormley, 2009 is shaping up to be the year of the likable middle-aged man on YouTube. An awesome tipster just found this video of a guy named Bert Griffin singing "Rihanna's Song (Bitch Slappin' Brown)," his song defending Rihanna's honor against her alleged attacker, Chris Brown. The chorus starts at 1:21, and is awesome: [videoembed ...