From the description on Flickr:

President Barack Obama jokingly mimics U.S. Olympic gymnast McKayla Maroney's "not impressed" look while greeting members of the 2012 U.S. Olympic gymnastics teams in the Oval Office, Nov. 15, 2012. Steve Penny, USA Gymnastics President, and Savannah Vinsant laugh at left. (Official White House Photo by Pete Souza)