Black Keys drummer Patrick Carney is once again involved in a public spat with another star. Carney stirred up controversy last year slagging Nickelback, and this time around he took a shot at Justin Bieber. Paparazzi caught Carney leaving the Staples Center and asked if Bieber deserved a Grammy nod. Carney replied, “He’s rich, right?… The Grammys are…for music and not for money. And he’s making a lot of money. He should be happy, I guess.” Bieber jokingly tweeted a response to the diss, “The Black Keys drummer should be slapped around — haha.”