"When I'm 64" is about a parrot that thinks it's people

Odradek

That's why it's concerned about still being fed when it's 64.

Imipolex G

Paul McCartney wrote that one when he was only 16

if you didn't know that, now you do

glennmagusharvey

No, it's because quite a few people are in need of attentive care by that age.