oh well if you are that bothered by noshie's comments then you should get out of GS ( applying your useless rule here).. plus what kind of a logic is that? Where in Quran it says go celebrate xmas or follow their ways.. infact it tells you NOT to do that or go their way else u will stand next to them in a judgement day.
Wishing them 'Merry Christmas' does not constitute kufr, stop trying to inject your fundamentalist dogma on here.