John could have been great, post Beatles, the way McCartney was if he didn’t spend over ten years whining about his mummy.
Everything in the parody was actually said by Lennon at one time or another. About 90% of it is straight from Lennon Remembers. You can listen here: https://www.youtube.com/watch?v=XVDpPX37fkU Warning: the language -- straight from Lennon's mouth -- would probably make your drill instructor sound like the Church Lady. Definitely NSFW.