This song triggered a famous exchange between Paul McCartney and George Harrison, captured during the filming of Let It Be:

Paul: It’s complicated now. We can get it simpler, and then complicate it where it needs complications.
George: It’s not complicated.
Paul: This one is like, shall we play guitars through “Hey Jude”… well, I don’t think we should.
George: OK, well, I don’t mind. I’ll play, you know, whatever you want me to play, or I won’t play at all if you don’t want to me to play. Whatever it is that will please you, I’ll do it.

Linda has said,

“As a kid I loved getting lost. I would say to my father – let’s get lost. But you could never seem to be able to get really lost. All signs would eventually lead back to New York or wherever we were staying! Then, when I moved to England to be with Paul, we would put Martha in the back of the car and drive out of London. As soon as we were on the open road I’d say, ‘Let’s get lost’ and we’d keep driving without looking at any signs. Hence the line in the song, ‘Two of us going nowhere’. Paul wrote Two Of Us on one of those days out. It’s about us. We just pulled off in a wood somewhere and parked the car. I went off walking while Paul sat in the car and started writing. He also mentions the postcards because we used to send a lot of postcards to each other“.