Michelle Obama has boosted her credentials as one of the coolest mums on the planet by starring in a rap video with TV comedian Jay Pharoah. The First Lady teamed up with the Saturday Night Live star to produce a music video encouraging youngsters to go to college. Michelle Obama makes rap video with TV comedian Jay Pharoah The pair are seen dancing in front of the White House Sporting sunglasses, she raps: "South Side Chicago, We all know. We had to do overtime every night to make it to tomorrow. "And everyone could really make their dream true. Hey...