"I'm so tired; I'm feelin' so upset
Although I'm so tired, I'll have another cigarette
And curse Sir Walter Raleigh;he was such a stupid get..."

I recall being completely thrown by this last expression, which I didn't hear again until years later on Monty Python (and they pronounced it "git".) Anyway, Lennon certainly wasn't endorsing the practice: the last words to that song are "...give you everything I've got for little piece of mind."