He may be the World's Strongest Man in both real life and on T.V., but he's met his match when it comes to arm wrestling.

You world thing that being the World's Strongest Man, Hafthor Bjornsson, better known as the Mountain in HBO's Game of Thrones, would have something as simple as an arm wrestling match in the bag. Think again.

There's a good reason he couldn't win though. He was going up against Devon Larratt, a 2X World Armwrestling League Heavyweight Champion. Check it out above.

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