Well, usually I dream nice things However, I once dreamed that classic of going to the university, meeting my colleagues and than realizing that I'm naked. Funny thing is: I didn't care. And than there was the dream about the world ending. Raining fire and brimstone (no, I'm not making this up). Funny thing in this dream: I was standing on the roof of some kind of factory and was enjoying the view of the world burning. Actually, somehow I MADE it rain fire, by force of will. That dream had me worried about my psyche for some time, but I wouldn't call it a nightmare, since I somehow enjoyed it. Also: Dreamed of smoking again for some time about 1 month after quitting.