To be fair, Humbug is as Christmas as, "Fa la la la la".
Fact is it's a fine term which can be brought to bare in any conversation and should be used far more often in daily use it being a noun meaning deceptive or false behavior. Perhaps President Bush is one. Of course the use of Humbug we hear the most at Christmas is "Bah, Humbug" which, of course is just a Dickensian term for "Bull shit." Actually the act of calling something a humbug is a pejorative as to it being false, a scam or fraud. It that light it seems to fit Christmas to a "T". Therefore the proper way to discern the meaning of "Bah, Humbug" would be, "Bah, It is a Humbug or perhaps "It (Christmas) is a confounded hum buggery that drives the foolish classes into debt from pure sentimental rubbish!" It should be remembered of course that the merchants depicted in the writings of Chas. Dickens were not of the retail class and therefore had no real interest in promoting the season as such, due to it still having a sense of the Pagan right of seasonal passage attached to it and the gifts given were often symbolic as well as frivolous amusement. It is quite important that we notice that aside from the "God Bless us, everyone" spoken
by the deformed and possibly retarded "Tiny Tim" Cratchett there is a definite lack of Christan religion in Dickens story. In fact, Tim's call "God bless us, every one", could easily be an entreaty for every God to bless us. Using that theory, then it certainly would not be safe for Ebenezer Scrooge to enter the slums and visit the Cratchett home. No, a small raise in salary and a new coal scuttle would be appropriate there. After all, Scrooge had family he could share his awakened kindness with, people of his own social standing Therefore, the only version of the Dickens Carol that is believable is the one in which the near sited Mr. Magoo plays the role of the scrooge character. Magoo has proven through the years that he can enter any situation that would be certain death to others and escape unharmed. Plus he is funny and in no way is he a Humbug. Now getting back to the lesson. A Humbug is something false; a scam. Saying "Humbug" or "Ba, Humbug" is similar to saying bullshit in a nicer way. Also to prevent the story of A Christmas Carol
becoming an allegory of good humor a common decency, remember that Mr. Magoo is in it an impressive number of times.