Tom Cruise can't stop breaking character during sketch with Jimmy Fallon

Tom Cruise visited The Tonight Show Starring Jimmy Fallon, where he played a little Mad Lib Theater. after coming up with some great words, the two tried to perform a spy-thriller scene. But from the very start, Cruise found that keeping a straight face was nearly an impossible mission.

Fallon spent about five minutes mining random words from Cruise — some of which were intrinsically funny, like “doodie head.”

Cruise is either a great sport or has had little exposure to Mad Libs, because he couldn’t stop laughing during the sketch. It took him several seconds to gather his composure just to get his first line out.

Fortunately, by the time he reached the last one, the three-time Oscar nominee was able to rein in the giggles and explain how his character became such a good spy. He said, “By waking up every morning, going up on the roof, and kissing, and by repeating my own personal mantra: poopity-scoop, poopity-scoop.”

If you’d like to see Cruise perform some real acting in a real spy film, Mission: Impossible — Fallout opens July 27.

The Tonight Show Starring Jimmy Fallon airs weeknights at 11:35 on NBC. Watch clips and full episodes of The Tonight Show for free on Yahoo View.

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