5. 'Water war' with Robert Pattinson
Nov. 8, 2012
When Jimmy challenged Robert Pattinson to a water war (which he has done with other celebs, like Tom Cruise) we doubt he knew he'd be the epic loser -- but that's part of what makes this clip so great. The two duel in a game of War with a twist: whoever loses the round, gets splashed in the face with a glass full of water, and the ultimate winner gets to slug the other with a water cannon. To start the game off, RPat splashes his pants with water, giving himself the "Billy Madison" effect. Hilarity ensues. Take a look.