I concur with most others here - especially eatenbytheworms who summarises it best. It's about never wanting to grow old and jaded, or lose one's idealism and lust for life. He asks his lover to remind him of this pledge to himself - if he survives his turmultuous youth and they're still together/in contact.
This is Radiohead's "When I'm Sixty-Four".
Hehe, just joking... kinda.
I concur with most others here - especially eatenbytheworms who summarises it best. It's about never wanting to grow old and jaded, or lose one's idealism and lust for life. He asks his lover to remind him of this pledge to himself - if he survives his turmultuous youth and they're still together/in contact.