Prank - Man Begins Boxing In Store When He Hears Fight Bell

It's easy to say that pranks have just about run their course and we are really digging to find any sort of prank that isn't fake.  This prank of a man boxing in the store definitely is not fake.

How does the boxing prank work?  The man enters the grocery store with glasses and headphones on acting all casual next to unsuspected shoppers.   As soon as he hears the bell he begins to violently punch into the air like a wild man leaving the people around him startled and scrambling to get away.  

Well not everyone runs away...see for yourself.