‘Twas the dark of the moon
On the 6th of June
In a Kenworth hauling logs
Cab-over Pete with a reefer on
and a Jimmy hauling hogs
We’s headed for bear on I-one-oh
‘Bout a mile out of Shaky Town
I said, “Pig Pen, this here’s the Rubber Duck
And we’re about to put the hammer down. 10-4?”
(best I can remember, anyway)

Sounds pretty close. June 6 is my brother’s birthday. I may have mailed his card in time!