This photo is one of the reasons why I love taking indoor pics without the flash. Movement creates random ghostly images. Happy accidents, if you will. Here the man in black in the foreground has lost his head. What really amuses me about this photo is the expression on the woman's face. It's like she is reacting to his head disappearing.
Later in the night, this 'headless' man grilled me as to why I was taking photos without using proper lighting and advised me to learn to use light. Ok buddy, whatever. I know where my head's at when I'm taking photos but judging from this photo he doesn't know where his head is at!