All he's saying is that polite people don't insult other people's parentage, family, religion, and so on. Doing so often gets an unpleasant reponse. What he said was that if you go to his house and insult his mother, he'll punch you.
What he said was: "You cannot provoke, you cannot insult the faith of others, you cannot make fun of the religion of others..." Well, like hell I can't. He can suggest that I should not, but he'd better not try to tell me that I cannot.
It'll probably still flop. It sounds like a real stinker.
I'm not sure if that's the point any longer.
"All the people are so happy now, their heads are caving in. I'm glad they are a snowman with protective rubber skin" -- They Might Be Giants