Presumptuous Much?

So, I was at work the other day and told one of my customers to "have a nice day." He, in turn, told me "Merry Christmas" ... um ... what?!?! It wasn't even December yet ... and there are several holidays this time of year. If all the bloody Xians out there can get their panties in a wad when others say "Happy Holidays" because they believe "Jesus is the Reason for the Season" ... well, then I can get pissed when someone assumes I celebrate the birth of a god (little "g") in whose name wars have been waged throughout history and innocent people slaughtered.