I heard once that in Sweden or Norway (curse the porosity of my memory) there was an organized campaign to stamp out an offensive second-person pronoun, with buttons proclaiming “I don’t say ___!” Unfortunately, the person who mentioned it did not remember what the offensive pronoun was.
Now I read in languagehat how the Swedish formal pronoun Ni faded after 1968.
So inquiring minds want to know: did the writers of Monty Python and the Holy Grail know about all this?