OK, you must be thinking of this one:

(Copied from http://www.eighteenminutes.com/Lyrics/AgeLikeWine.html)

AGE LIKE WINE
Todd Snider

Old timer, old timer,
Too late to die young now.
Old timer, five-and-dimer,
Trying to find a way to age like wine somehow.

My new stuff is nothing like my old stuff was,
And neither one is much when compared to this show,
Which will not be as good as some other one you saw;
So help me, I know, I know.

I am an old timer, old timer.
It's too late to die young now.
Old timer, five-and-dimer,
Trying to find a way to age like wine somehow.

I've met every fool that ever signed their name up on these walls
In the backs of all these beer joints and concert halls.
I've been through seven managers, five labels,
A thousand picks and patch cables,
Three vans, a band, a bunch of guitar stands,
And cans and cans and cans of beer,
And bottles of booze, and bags of pot,
And a thousand other things I forgot.
I thought that I'd be dead by now,
But I'm not.

[As sung by Todd Snider on "East Nashville Skyline," Oh Boy CD #31, 2004.]