Classic heavy metal band Judas Priest made a guest appearance on last night’s episode of The Simpsons, which tackled the topic of illegal downloading and pirating. The band played a parody version of their hit song “Breaking The Law” entitled “Respecting The Law”. The Swedish character that is with the titular family begins rocking out, throwing up devil horns and headbanging. It’s an amusing little moment, even if Priest isn’t death metal, as the show claims. Watch the snippet below!