Someone's definitely played flip cup a lot before.

Fallon's latest invention that's been dubbed 'Slip and Flip' is a twist on the game of flippy cup we all know that does exactly what it says on the tin.

We really don't know why Fallon bothered going up against Hemsworth, a bona fide action movie veteran at this stage and a hardened Australian who can handle pretty much anything being thrown at him. Still makes for a tense showdown though.