Web Catch: Watch Daniel Radcliffe and Jimmy Fallon's ruthless game of 'water war'

“Just so everyone knows, I’m going to a premiere after this and I don’t think I brought more underwear,” quipped Daniel Radcliffe.

The star was in the middle of an intense game of "water war" – a soggy take on the classic card game – and the cards were in Jimmy Fallon's favor. (The winner of each round gets to splash a pint of ice water at his opponent's face.)

If you're in the mood to mix things up during your family's Thanksgiving celebration, take a page from Fallon's book. "People can play this at home, they have. It's a very fun game for the family to gather around."

So who emerged victorious? Watch the video above.