On last night's Late Show With David Letterman, President Barack Obama got candid about his relationship with wife Michelle and told a funny story about their first anniversary. The president gushed to Letterman about "wonderful" Michelle, joking that the Democratic National Convention was more about her than him, saying, "As usual, people always realize how much better Michelle is than me." He added that what really makes the first wife special is how genuine she is, noting that she doesn't act differently around different people. Neither Barack nor Michelle are likely to forget their 20th anniversary on Oct. 3, but one of them did forget their very first anniversary! Watch the clip now to find out who it was!