Okay, I'd tell you a real story that happened to a friend of mine. But then it would be posted all over the internet in one form or another. So all I can tell you is there is no logical explination for what happened it could not possibly have been a prank, (because no one could have known my friend - or anyone else would be there, and the large ammount of time taken to execute the "prank"). Basically there is no explination for it at all.