I imagine this was painted by Hagios Homer of Springfield:-) (actually it was made up by Mad Priest). Heresy? Impiety? Nah, just remember St Thomas More's dictum: "The devil ... the proud spirit cannot endure to be mocked" (A Dialoge of Comfort against Tribulacion (Book II, cap. XVI)). Why George Carey and Co get so steamed up about Christianity being mocked etc I don't know - it means we've ceased to be respectable and beyond criticism and once more entered the hurly burly of the World. Which might mean fewer "cultural Christians" and more committed ones. which would be no bad thing.