What's wrong with me?

I don't know.
I am sitting at my desk at work, with a rather large stack of pre-leaving tasks that simply must be done, and I cannot get focused or motivated to do any of it.
I am in a serious "screw it all" mood today.
I want to go home, put on my sweats, grab my pillow and a blanket and spend the day on the sofa alternating between napping and watching season six of BTVS on DVD.
AARRGG! I really need to get out of here for the day!