That's a meme: President Obama and gymnast McKayla Maroney struck her "McKayla is not impressed" pose when members of the Olympics team visited the White House in November. Pete Souza/The White House/Getty Images hide caption

itoggle caption Pete Souza/The White House/Getty Images

Korean rapper PSY is responsible for the song Gangam Style, whose flashy and humorous video has brought K-pop to new ears. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist