A Hard Day's Night1964

John:
Hey, pardon me for asking, but who's the little old man?

Paul:
Uh, what little old man?

John:
That little old man.

Paul:
Oh, that one, that's my grandfather.

George:
Your grandfather?

Paul:
Yes.

George:
That's not your grandfather.

Paul:
It is, you know.

George:
But I've seen your grandfather. He lives in your house.

Paul:
Oh, that's my other grandfather, but he's my grandfather as well.

John:
How do you reckon that one out?

Paul:
Well, everyone's entitled to two, aren't they, and he's my other one.

John:
We know that. But what's he doing here?

Paul:
Well, my mother thought the trip would do him good.

Ringo:
How's that?

Paul:
He's nursing a broken heart.