An interpretation of Paul McCartney's Monkberry Moon Delight from his 1971 album RAM

Can't say what this song's about but I'll try guessing It's inspired by Paul and Linda sitting watching documentaries and one was about ketchup including the observations of John Sinclair in the industry of ketchup manufacturing in his 1906 book "The Jungle" Monkberry Moon Delight may be the  fermented, putrified swill that after being diluted with vinegar to mask the offensive taste and odor would be passed off as Ketchup before the enactment of legislation resulting from the book to require that all Ketchup be made from the flesh of whole tomatoes and not the byproduct refuse that manufacturers had been using until then The song has no message, only a theme for word play, ketchup, and so Paul incorporates the old "Catch up" joke and tells the other tomato products, soup and puree to "catch up"  "I know my banana is older than the rest and my hair is a tangled bureta"  Someone like a  Filipine person claims Banana Ketchup has been around longer than tomato ketchup Bureta is a municipality located in the province of Zaragoza, Aragon, Spain "Don't get the gist of your letter" It would seem Billy Budapest asked Paul if he would leave him his pajamas next time he dies, since Paul is rumored to have died Who's Billy Budapest? Maybe the owner of Billy's Pub in Budapest I don't know Basically it's just bits and pieces of things Paul and Linda saw while watching documentaries one night What makes me think that? Because the video for the song shows them watching together eating popcorn Have any thoughts? Send them in