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, November 15, 2012. Steve Penny, USA Gymnastics President, and Savannah Vinsant laugh at left.

According to Know Your Meme:

On August 5th, 2012, Maroney performed a nearly flawless vault during the 2012 Olympic Games in London, England, leading many to believe she would win the gold medal for the competition. During her second vault, Maroney failed to reach enough height to land on her feet and subsequently fell on her backside.
 
After receiving a total score of 15.083, Maroney ended up taking the silver medal for the competition. While on the winner’s podium, Bryan Snyder of the international news agency Reuters took a photograph of Maroney making a scowling expression.