This will probably always continue to crack me up every time I hear it. I grew up always being told that there was a strict separation between the two sides of Christmas -- the "light" side (Santa Claus centered) and the "serious" side (any religious meaning), as if "never the twain shall meet". I'm not saying there is necessarily anything wrong with mixing them like in these lyrics -- like at all you want. But still, it runs so contrary to the way I was always taught that I'll probably always have a "knee-jerk" reaction trying to tell me that this is crass in the extreme.