i found this while looking at sites cause i was bored.
its some sort of audio thing. make sure you have head phones of somesort pluged in for it to work. no its not some sort of scary thing.
heres a link to all sorts of things. do the haircut first!http://onemansblog.com/2007/05/13/get-your-virtual-haircut-and-other-auditory-illusions/