I couldn't find the words in DT so I will post them here. The song can be heard on page A12 of The Record Lady done by The Carliles.

TOO OLD TO CUT THE MUSTARD
Words and music by Bill Carlisle

[D] When I was young, I had an [A7] automobile
I'd scoot myself right [D] under that wheel
I had to fight the gals off [A7] with a stick
But now they say, [P] ..."Oh, he makes me sick."

Refrain:
He's [D] Too old, [G] too old
He's too [D] old to cut the mustard any-[A7] more [P] ...
He's a-gettin' [D] too old, he's done got [G] too old
He's [D] too old to cut the mus-[A7] tard any-[D] more.

When I was young I had a lot of pep
I could get around, I didn't need no help
But since I'm old and a-gettin' gray
The people all look at me and say.

Refrain: