The greatest Olympian of all time, Michael Phelps makes his first appearance on "The Ellen DeGeneres Show" Tuesday, Sept. 20th.
Ellen chats with Phelps about his 28 Olympic medals and his experience at the games. The swimmer reveals that he rarely takes the medals out in public. In fact, only two people in the entire world know where he keeps them.
Plus, Michael chats about if his son Boomer will be a swimmer and Ellen gifts him with a tiny Olympic pool just in case!