Comedy Central has chosen Justin Bieber as the next headliner for its annual roast. Justin shared the news on his own Twitter page, saying, "Finally after all that hard work for my 21st bday it's happening." According to Comedy Central's Kent Alterman, "Justin has been asking us for a few years to roast him, and we just kept telling him to go create more source material first. We're thrilled he listened." Seeing as highlights of Justin's past year include his arrest and mug shot, stripping down to his skivvies and getting booed during Fashion Rocks, and even those widely discussed Calvin Klein ads — which SNL has already parodied — we imagine the roasters won't have trouble coming up with material. We just hope Justin's ready for it.