Chris Pratt has been hamming it up on his Passengers press tour [1] with Jennifer Lawrence [2], and on Tuesday, the actor stopped by The Tonight Show Starring Jimmy Fallon to promote the film. After discussing the sci-fi romance, Chris and Jimmy Fallon performed a Christmas-themed Mad Libs Theater skit, and the two could barely keep it together. Between the hilarious script and Chris and Jimmy's constant giggles, you'll have a hard time not laughing, too.
