Michelle Obama's newest memoir Becoming has officially hit shelves and sold 725,000 copies on its first day becoming the largest single-day total for any book published by Penguin Random House. The former First Lady is still doing press tours for her book, and during her recent one in Washington yesterday, her adoring husband Barack came by with a bouquet of flowers for his wife. 

The crowd obviously went wild when the 44th President of the United States made his surprise appearance and in the video below, you can see him comparing the event to when Jay Z pops up on stage during a Beyonce show. "This is like—you know when Jay-Z comes out during the Beyonce concert? ... 'Like, Crazy in Love?'" he said. "It's the same thing. It's just a little sample to enhance the concert."

Michelle previously hit up a Costco to do a book signing with Ellen DeGeneres while the talk show host hilariously tried to take over, watch that here