Watch Zac Efron Empty Water Pitcher on Jimmy Fallon's Head

A game of War turned into psychological water-warfare on 'Tonight Show'

Zac Efron and Jimmy Fallon faced off in a waterlogged version of the classic card game, War, where the winner of each round dumped water on the loser.

Zac Efron and Jimmy Fallon were locked in a heated battle of The Tonight Show's "Water War," a twist on the classic card game where the loser of each round receives a glass of water in the face.

With shades of The Deer Hunter's Russian roulette scene, the two tried to stifle their nerves as they slapped down their cards. "This seems so disrespectful," Efron said before dowsing Fallon. The host got revenge by slowly draining a glass in the actor's lap.

By the end of the match, Fallon and Efron threw down the same card — Kings — and set about a tense bonus battle. Efron won with the reward of getting to dump an entire pitcher of water on Fallon's head. But Fallon retaliated by blasting Efron in the chest with a super soaker. Game over.