When Lennon received a letter from his old school, the Quarry Bank High School, telling him that they were having a class based on the analysis of the Beatles' song lyrics, Lennon had the brilliant idea to write a completely nonsense song by using character from books he read and stories he imagined.
The Walrus was inspired by "The Walrus and the Carpenter" story from Lewis Carroll's Through the Looking Glass (one of John's favourite books).
"Walrus is just saying a dream", recalled John more than a decade after he composed it.
Same for the "Egg Man" whom has been interpreted as referring to Humpty Dumpty (from "Alice in Wonderland" books).
You can read a more accurate description on the Mental Floss' blog: http://mentalfloss.com/article/30523/who-was-walrus-analyzing-strangest-beatles-song
Also have a listen at this interview with Pete Shotton (John's best friend).
The lyrics for I Am The Walrus were a mock of a nursery rhyme.
Yellow matter custard, green slop pie,
all mixed together with a dead dog’s eye.
Slap it on a butty , ten foot thick,
then wash it all down with a cup of cold sick.
You can read a more accurate description here : https://shkrobius.wordpress.com/2014/02/16/i-am-the-walrus-yellow-matter-custard/amp/
Who was the Walrus? Anomalies
Dr.Tomoculus made a fantastic job in spotting particular things that really raise some eyebrows when you ask yourself who's behind each mask.
A wrist-watch and a ring on Paul and Ringo seems to appear and disappear and being swapped between each other. Also you can note in a photo that Ringo seems to have no moustaches in his face ... Very interesting.
|John playing around (doing the walrus tail) and Paul wearing George's mask (or a similar one) on the set of the video.|
There is also an alternated version of the music video of "I am the walrus" that was never officially published. Decisively an interesting version.
Or the original unremastered version.