It is most definitely a joke. It all revolves around my ImgFlip user name and the movie, Monty Python and the Holy Grail. At one point in the movie the Knights who say "Ni" announce that they are no longer the Knights who say "Ni", they are now the Knights who say "Ecky ecky ecky ecky pahtang zoom boing mumble mumble".
That is a possibility. That movie came out almost 50 years ago so I can't expect anyone from a younger generation to even know anything about the movie. However, the Holy Grail seems to have staying power. Probably because they don't make good comedies any more. So hopefully enough people will get the joke. I just happen to be of a certain age where I saw that movie in the theater when I was 17. It became one of my all time favorite comedies.