I thought that song was about a quack chiropractorFrom John Lennon's stream of sub·con·scious·ness lyric to Come Together:
He bag production
He got walrus gumboot
He got Ono sideboard
He one spinal cracker
He got feet down below his knee
Hold you in his armchair you can feel his disease
Come together, right now, over me
Just noticed John appears to be referencing himself in this verse