He might be one of the most legendary action stars ever, but in real life Arnold Schwarzenegger can be quite the prankster (OMG! What if Jingle All The Way was a prank on all of us?!). To promote a charity and his next film, Terminator: Genisys , he pretended to be a wax statue of the T-800 at Madame Tussauds Hollywood Museum.
Check him out in action.