Mark it on the calendar. Today I got my first "Advance Merry Christmas." A student told it to me during class this morning. I just laughed. Dude, it's the first week of November, but thank you very much!
People are always saying "advanced so and so" or "Happy belated whatever." It's kind of nice, like they want you to think of them later on, and they really do wish you that extra happiness. I'll get other sayings from students, like "advanced good evening," when all I'm doing is walking back to the house for lunch.
But by far, my favorite advanced greeting has to be the one that followed today's Merry Christmas. Not to be outdone by the eager wisher, the kid next to him followed with, "and Advanced Happy New Year!"