Not Even Arnold Schwarzenegger Can Keep a Straight Face Around Jimmy Fallon

Arnold Schwarzenegger has been busy promoting his new film Terminator Genisys this month, and the legendary actor dropped by The Tonight Show on Wednesday night to talk up the '80s reboot. After his interview, Arnold played a game of Brainstorm with Jimmy Fallon, and it's pretty hilarious to see him try so, so hard to keep a straight face in the midst of Jimmy's hilarious one-liners — just watch Arnold's reaction when the host makes fun of his accent. Check out the video above, and then see Arnold pretending to be his own wax figure at the famed Madame Tussauds in Hollywood.