What Do Atheists do for Christmas?

I was sitting in the tub today and I had a thought, what do atheists do for Christmas. They don't believe in God or Jesus right? So obviously the birth of Christ would mean nothing to them. Aside from enjoying the day off from work, what do they do? I'm really curious. Do they sit at home drinking egg nog and talking about how stupid we all or for believing in some made up holiday? Do they still exchange gifts but in the name of something else other than Christmas? Is there any kind of celebration? I really want to know but I'm too lazy to do my own research.

What do you think?