You're thinking of the crap that Paul wrote before the Beatles dropped LSD.
John Lennon's solo career is among the finest of any musician who ever lived.
YouTube - John Lennon - Well Well Well
Badass.
Well then I listened to the Beatles because that's what you're told to do
When you're young and empty and you haven't got a clue
The White Album from my mother, Rubber Soul from my big brother
And don't question Mr. Lennon, boy, cause he gave his life for you