In the Christmas/Holiday season, any greeting whose sole instrumental purpose is a financial transaction.

When an employee of a retail establishment greets a shopper in the fourth quarter of the fiscal year-- though in particular, beginning on Black Friday.
CLERK: "Season's Greedings, Ma'am."
SHOPPER: "Thanks, and Happy Holidays to you, too. Do you accept American Express?"

'Merry Christmas' and 'Happy Holidays' are the most common season's greedings.
by Neologian-PJG December 20, 2011
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