We did a lot of research into the prepper phenomenon, where people are convinced that some horrible catastrophe like an electromagnetic pulse is going to occur, and that people will have to survive without the grid, he says. So naturally, Homer becomes a prepper.
Jean says that the Grammy-winning Waits wont sing in the episode, titled Homer Goes to Prep School, but fans will recognize the singers trademark growl in a second.
The episode is expected to air sometime in December. In the meantime, Waits can also be seen in the upcoming film Seven Psychopaths, which hits theaters in October. Watch the trailer for the film here.