In the episode “Lisa the Vegetarian” (Season 5) there is a guest appearance by Paul McCartney, sorry Sir. Paul McCartney and his late wife Linda. They both help Lisa be proud of her new found Vegetarianism (and her marriage to a carrot that will no doubt be in her future). During that episode Paul McCartney says, “In fact, if you play ‘Maybe I’m Amazed’ backwards, you’ll find a recipe for a ripping lentil soup.” (a reference to “Revolution 9” by The Beatles which when played backwards apparently claimed Paul was dead…or something like that). But here is where The Simpsons genius is taken to the next level. if you play the version of “Maybe I’m Amazed” that’s featured in the closing credits backwards, you can hear Paul quietly recite a recipe for lentil soup in the background. OH YEAH! How awesome is that!! Check it out!