Ok, bizarre thing happened to me last year at the Halloween party. I didn't know anyone there other than the husband and wife that invited me to tag along.
We were all drinking and having an ok time. Playing some darts in the basement, etc. Hearing some really bizarre stories about the wife of the house but that's another story not for this board.
Anyway, during later in the evening, I had to use the bathroom. As I'm shutting the door, some guy that I had very briefly talked to earlier as I was standing next to my friends, pushes the door open and walks in behind me. He shuts the door and plants a big kiss on me! Said he just had to do that, apologized and walked out