Here is a nice, short article on the so-called Stir-up Sunday. I would only argue that this tradition is not only Anglican but is also Roman. I always thought this was sometime in Advent, but, alas, it is the last Sunday before Advent, which this year was November 30—as I jokingly called it, the “Sunday within the Octave of Thanksgiving.”
Incidentally, from the last Sunday before Advent through the Fourth Sunday of Advent, all but one of the Collects begins with excita, the Latin word which is translated “stir up.” Consequently, I was never sure which one was Stir-Up Sunday; I always figured it to be closer to Christmas.
In any case, the age-old tradition is that people would go to church and hear “excita” and know that it was time to stir up the Christmas pudding. It is, in truth, a quaint and innocuous custom—hardly the red meat that built the Medieval cathedrals or wrote the polyphony of Leonin and Perotin–but it is nonetheless an example of the mutual discourse between religion and culture which is presently absent. In this subject area, contemporary Christianity of all types (well, maybe not Eastern Orthodoxy…) has chosen various swords of stupidity on which to fall. Some insist on a “dialogue” with culture which ultimately co-opts the most vapid aspects of peasant taste. Others pride themselves on not being of the world and therefore eschew anything that is less than a century old. Both approaches are suicidal.
A solution for this? I’ll have to think about that.