what godless heathens and various marketing departments have turned Christmas into by removing all traces of Jesus Christ from the matter. one can tell who celebrates which holiday by looking at decorations in the home. often angels will be replaced by snowmen; pictures of Jesus will be replaced by Santa Claus; and "silent night" will be replaced by "grandma got run over by a reindeer" on the cd player.
Atheist: that's a funny looking gingerbread house. what's with the little people?
Christian: ...? that's a Nativity scene. it's a symbol of what Christmas is all about. how can you not know that?
Atheist: oh. i don't believe in Jesus, but I'll gladly piss on your traditions to get a present. I'll celebrate the secular holiday "Christ-less-mas".