John Lennon (in 1972) - "I think I helped Paul with some of the words."
John Lennon (in 1980) - "Paul's, completely. I would never dream of writing a song like that. There's some things I never think about, and that's one of them."
Paul McCartney (in 1984) - "I wrote the tune when I was about 15, I think, on the piano at home, before I moved from Liverpool. It was kind of a cabaret tune. Then, years later, I put words to it."
Paul McCartney (in 1994) - "I thought it was a good little tune but it was too vaudvillian, so I had to get some cod lines to take the sting out of it, and put the tongue very firmly in cheek."
