Celebrity magician Rich Ferguson's best ever halloween stunt (VIDEO)

One minute you're walking down an alleyway minding your own business... and then you bump into a man who sneezes and his head falls off. And then he tries to re-attach it to his body.

But always expect the unexpected on Halloween, as the residents of San Luis Obispo, California, found out.

Magician Rich Ferguson performed his 'head drop' trick on the streets of his hometown.

Now, his illusion, and the hilarious reactions of unsuspecting strangers, has become a YouTube monster smash, with almost 4million hits.