Sensing that it's been a while since anyone's had an old-fashioned debate over the relative "punk"-ness of Green Day, a conversation as refreshing—and edifying—as a glass of lemonade on a summer's afternoon, Billie Joe Armstrong has joined NBC's The Voice as a mentor to Christina Aguilera's team, where he will offer singing, marketing, and eyeliner advice. Of course, Armstrong already turned one of his albums into a big Broadway musical that your mom gushed about while characterizing it as "so you," and thus there are really no more arguments even to be had about what punk credibility the band has left, or whether it ever had any—even in light of the fact that Armstrong is joining a panel that consists of Maroon 5's Adam Levine, Matchbox 20's Rob Thomas, and Michael Bublé in helping to mold talented karaoke singers into readymade pop stars, and timing his sudden decision to do so with the impending release of Green Day's new album trilogy. So instead, we can all move on to the far more interesting, modern debate over whether "punk" and "credibility" are themselves manufactured, outdated concepts clung to solely by the boring and naïve. Or we could just not argue at all and watch this possum eat a strawberry.