Hopefully not reoccuring, but crazy none the less.
A couple of nights ago, I had a dream where a couple of friends of mine and I went on a killing spree. It was so vivid. I was so sick when I woke up. It took me 10 minutes to rationalize out that it was just a dream.
Definitely glad I was sober for that. If I had woken up in a drunken haze after that one, I might still be convinced it was real.