Daniel Radcliffe stopped by last night on "The Tonight Show Starring Jimmy Fallon" and got absolutely soaked during a game of "Water War." The game is a take on the classic card game "War," except whoever loses their hand gets doused in water.

The 26-year-old star of the upcoming film "Victor Frankenstein" sat down across from Fallon where they both got five glasses of ice cold water, the first to use all five of their glasses was declared the winner. At the end of the game the winner got to drench the loser with a super soaker water gun.

Radcliffe started out strong and won the first hand, which led him to pour a glass of water over "The Tonight Show" host's head. A couple of rounds in, the two both flipped over the same card and after Radcliffe won the battle, he got to pour an entire pitcher of water over Fallon's head.

After Fallon eventually won again, he paid Radcliffe back by pouring water not onto his head, but directly onto his lap.

"For the record as well, just so everyone knows, I'm going to a premiere after this and I don't think I brought more underwear," Radcliffe said as Fallon laughed. "Which is great."

Watch the video below to check out who won the "Water War."