Paul McCartney and Jimmy Fallon Sing an Updated Version of "Yesterday" About Food 9.84K Whitney Jefferson 12/10/10 11:00AM Filed to: Late Night Late Night Paul McCartney Jimmy Fallon Music tweet TV Video Because Sir Paul is Saturday Night Live's musical guest this week, it makes sense that after hanging around 30 Rock all week, he and Jimmy Fallon had time to rewrite the words to be about waffle fries and scrambled eggs.[There was a video here]