If you call yourself Ludacris or Slash or Flea, chances are you're not gonna name your kid Matthew or Martha or Mike. In fact, rock-and-roll and hip-hop musicians are probably the most imaginative—or outrageous, depending on your point of view—category of baby namers there is, honoring their musical heroes (Thelonious, Lennon, Hendrix), using words as names (Million, Dream, Zeppelin), or just letting their fantasies fly. To wit: