The “Blackhat” actor, appearing on “The Tonight Show Starring Jimmy Fallon,” took on the host in War, in which the competitors turn over playing cards, with the higher card designated the winner. In the Hemsworth-Fallon battle, there was an extra twist: After each card was turned, the winner got to throw a glass of water at the loser.
At the conclusion, the person with the most wins got to soak the other with a water cannon.
