Dang, gotta watch that cut and paste button.Ignore the above. Here's the words as I transcribed 'em from the link, including one set in brackets that I can't figure out.
Blessings,
Barbara

(DON'T KNOW WHAT WAS) THE LAST THING ON MY MIND
(parody by Sue Trainor)
(Last Thing On My Mind by Tom Paxton)

It's a question too late for the asking
I don't know, I don't know.
In the blink of an eye my thoughts are passing,
Where'd they go? Where'd they go?

CHORUS
Thoughts are going away with no word of farewell
Will there be one idea left behind
I used to be a genius but now today I find
I don't know what was the last thing on my mind

As I walk down the hall -- try to remember
Where I'm bound, where I'm bound:
I need to call, no, where's my sandwich? In the blender --
Turn around, round and round.

Gave 'em reasons a-plenty for going
This I know, this I know.
Boones Farm, Gallo, gin, [beans weed] a blowin'
Why'd I'd blow, there they go..

As I lie in my bed deep in slumber
I construe, cerebrate anew,
But at my desk I can only sit and wonder
Without a clue, one frigging clue
^^