At some point, you've either played the game flip cup or you've seen it at a party or on TV... but Jimmy Fallon and The Tonight Show took it to a whole new place with Keri Russell from Felicity! 

Yes, Flip Cup is generally considered a drinking game, but you don't have to use alcohol... and the inflatable suits are optional as well! Watch as Jimmy and Keri battle it out in this hilarious version of 'Inflatable Flip Cup!'

FYI, both Jimmy and Keri have clearly spent some time at college frat parties!

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