Elves are known for their cheekiness and they didn't let us down – even in the presence of the most powerful man on the planet!
During a photo opportunity at the Christmas in Washington concert, President Obama and his family were left stitches as young patients from the Children's National Medical Center made hilarious faces at the camera.
It was a high point among many at the star-studded annual event, which was hosted this year by Hugh Jackman and featured performances by Sheryl Crow, Janelle Monae and the Backstreet Boys among others.
The Obamas met five of the hospital's young patients, who stole the spotlight dressed as elves.
First Lady Michelle asked them: "Hey, you guys, you going to help us?"
Mr Obama laughed: "Good job, elves. Nice job."
The whole Obama gang – including daughters Sasha and Malia - was laughing even more as they said 'Cheese!' and two of the little elves showed off their silliest faces.