Jimmy Fallon and Michelle Obama Jimmy Fallon and Michelle Obama

Jimmy Fallon headed to the White House, where he met up with first lady Michelle Obama. The two eschewed a typical one-on-one interview for something a bit more unconventional on Tuesday's Late Night: Fallon took on the first lady in a series of physical competitions including tug of war and dodge ball. The sendup was cute and entertaining, sure, but it also aimed to spread the word about Obama's "Let's Move Initiative," which encourages kids to get active in hopes of solving the childhood obesity epidemic.

The competition culminates with a dramatic potato sack race (in slow motion to the them from Chariots of Fire). But who wins? Check out the video:

And what was President Barack Obama doing while his wife was busy beating Fallon? Oh, he was just launching marshmallows out of an air cannon with some eighth-graders at the White House Science Fair.