Watch Game Of Thrones’ The Mountain get crushed by a professional arm wrestler

After debuting as Gregor “The Mountain” Clegane in Game of Thrones’ fourth season, Icelandic strongman Hafþór Júlíus Björnsson became a viral sensation for his many feats of strength. We’ve watched Europe’s Strongest Man break multiple “tossing stuff’ records, hurl a washing machine, and carry a giant log on his back…