The month following Novembeard and preceding Manuary. It is the second month of unimpeded facial-hair growth prior to shaving one's beard into a desired mustache/chops combination in recognition of Manuary.
My Decembeard is getting pretty thick, I can't wait till the new year to form this into one helluva Manuary mustache.
Similar to Movember (dedicating ones self to moustache excellence throughout the month of November) Decembeard takes this one step further promoting the untamed growth of facial hair. This lasts until Manuary when men everywhere, sculpt their efforts, trying to live up to the standards of the Manliest of Men.