I am the Walrus is one of John Lennon's most baffling songs. It combines elements of Alice in Wonderland, childhood nursery rhymes, and groups of words that Lennon thought up when he was under the influence of hallucinogenic drugs, all laid over a funeral march, that may have been in reaction to the death of the Beatles' manager, Brian Epstein.
I remember sitting in the back of my mom's car while my older brother expounded on what all of the lines meant. The truth is that the song had no meaning whatsoever. Instead the words are nothing more than random nonsense selected for evocative sound.