Keri Russell and Jimmy Fallon go head to head!

On last night's episode of The Tonight Show, the talk show host, 40, challenged his guest, Keri, 38, to a hilarious game of flip cup with an interesting catch — they had to wear inflatable suits!

"I've never even played this before, but I'm so ready to take you!" the actress told her opponent before the game began, to which Jimmy jokingly replied, "Yeah, right."

Watch the video below to see who wins!