Jake Gyllenhaal Giggles Adorably as He and Jimmy Fallon Slap Each Other Across the Face

Jake Gyllenhaal Embraces His Inner Nerd
Jake Gyllenhaal made his professional musical theater debut...

What do you get when you mix a giant hand a dose of Jake Gyllenhaal and Jimmy Fallon? Intense silliness.

Gyllenhaal joined Jimmy Fallon on the Tonight Show Tuesday night (Jul. 21, 2015) for an intense game of slapjack.

The game’s is similar to blackjack, except if whoever loses the round gets smacked in the face by their opponent’s large rubber hand.

Things got very silly very fast, and it seemed that the Southpaw actor didn’t quite understand the rules of the game.

Watch the video above and enjoy all the fun.