Bear's one made me laugh (and
hungry).
Choco B: amen to that. 
Mine: not exactly a greeting but....
The city streets are all dolled up
with lights of red and green,
and banners of white and gold, while
ageless Christmas carols blare
from Santas made of styrofoam.
Last minute present hunters
stalking shopping centers
set their sights on procuring gifts
selling at slashed down prices.
So, leave your Merry Christmases at the door,
and Season's Greetings for the cashier on your way out,
for now it's elbow time for some one-of-a-kind,
or make your claim to a last-one-on-the-shelf
before they close up at nine.