Being a pop star is the best, right? You win the genetic jawbone lottery, then someone writes a bunch of songs for you and it's all Demerol and Grey Goose, a guest spot on "CSI: Poughkeepsie," and a never-ending series of studio-selected starlet girlfriends that you can hold hands with in public places until US Weekly offers you $250k just to come out of the closet. Even with how stressful it can get finding late-night macrobiotic food on tour in Topeka, it's still a better life than yours or mine 364 days out of the year. But as we observed in the case of Joe Jonas, it might not be so great to be famous on your birthday.