Slightly sarcastic with a good chance of a) indifference or b) disinterest

I've been in a foul mood for the past few days. Not really angry or upset, but easily agitated and a little down and for no reason at all. Sometimes, I see these moods coming, but this one really snuck up on me. I'm sure it's just a minor phase, and I'll be over it pretty soon. It's when I get in these moods that I want to just lay on my bed and read, even though I know I should be around people as much as possible. Luckily, I have two parties to attend this weekend, plus, I'm going boarding tomorrow with some friends from work. That should make me snap out of it. I hope.