Oprah has a fun life, exemplified yet again on her Monday show when she danced and sang along with Usher and will.i.am as they performed "OMG," the current front-runner for song of the summer.
Below is video of the end of the performance, when Usher tossed Oprah his sunglasses to wear as she kept singing and dancing.
Just last Monday Oprah cohosted the Met Gala, and (fueled by tequila) danced on a banquette at the afterparty, along with Usher and Diddy.
Then she was back to Chicago where she taped today's show featuring the performance.
Scroll below the Oprah clip to hear the whole song.