Xenia is the ancient Greek concept of hospitality, as per Wikipedia.  It's the generosity and courtesy shown to those who are far from home and/or associates of the person bestowing guest-friendship.

I don't have a topic for x and I wasn't able to post yesterday because I can't think of any, and I'm blaming my laziness for that.  I copied the description straight from Wikipedia, and that's so embarrassing.  But I cannot skip X, so maybe I'll just leave this post like this.. looking like shit. sorry.