Daniel Radcliffe stopped by The Tonight Show With Jimmy Fallon to promote his latest flick Victor Frankenstein and engaged in some serious fun and games with the late night host.

Jimmy Fallon And Daniel Radcliffe Battle It Out In ‘Water War’

In his opening monologue Fallon spoke about South Korea’s plan to erect “a giant monument to the song ‘Gangnam Style,'” which quickly led to audience members demanding the comedian dance the signature moves to the 2012 K-pop megahit. Fallon initially refused but when he is commanded to do so by Radcliffe he reluctantly obliges.

“Now, listen to me, James Fallon: I didn’t swim here all the way from England not watch you not do the ‘Gangly Style’ dance, OK? Hit the music,” the Harry Potter star joked.

The antics escalated further when Fallon proposed he and Radcliffe play a game of war. You might initially think the classic card game wouldn’t make for great viewing but the host’s version involved dousing the losing opponent of each round with a jug of water. The first to pour five jugs over their adversary would be crowned the winner. Fallon christened the game, ‘Water War.’

Check out the clip below to find out who was victorious.