After what looks to be a successful Facebook-based campaign to get Betty White on Saturday Night Live, 15-year-old tween heartthrob Justin Bieber is the latest celeb to land an SNL gig after a concerted social-media effort. After the circulation of a number of online petitions and a @BieberonSNL Twitter movement, Rap-Up reported that Bieber will perform as the musical guest on the April 10 episode. Bieber, who confirmed the news on Twitter, offered the following idea for his episode: “Me and Chuck Norris should do SNL together. that would be good. very good.†Yikes. [Rap-Up]