The original of this is in the DT: ON TOP OF OLD SMOKY

Lyrics of the transcribed from the sound file at http://www.geocities.com/u2page6/

DON'T SING ALONG (ON TOP OF OLD SMOKEY)
(Jeffrey Clay)

[Jethro begins playing the intro on the mandolin, and hits a (deliberately) wrong note.]
--Hey, hey, hey! Will you play that again please?
--All right. Here we go.
[Jethro plays the intro again, hitting the same wrong note.]
--That's a lot better.
--Thank you.
--I thought you's playin' it wrong there at first. Let's all sing now.
--All right. Here we go.

On top of Ol' Smoky
All covered with snow,
I lost my true lover
By courtin' too slow.

--Uh, would you folks like to sing along with us?
--Yeah!
--Well, I wish you wouldn't, 'cause we want to sing it by ourselves.
--Come on now, Homer. You promised 'em. Now why don't you just kind o' give 'em the lines an' let them repeat after us.
--All right.

--On top of Ol' Smoky
On top of Ol' Smoky
--All covered with trees,
All covered with trees,
--I stood in the water
I stood in the water
--Plumb up to my ankles.
Plumb up to my --huh?

--Homer, just a minute. That don't rhyme.
--Well, the water wasn't deep enough.... Jethro, gimme a E-flat there.
--You know I can't play an E-flat.
--Well, gimme a E an' I'll flatten it out myself.... Let's all sing again, now.
--All right.

--Her hair was so wavy
Her hair was so wavy
--An' soft as pure silk.
An' soft as pure silk.
--'Cause when she shampooed it,
'Cause when she shampooed it,
--She used dragon milk.
She used dragon --huh?

--Cut! Homer, where do you get that "dragon milk"?
--Well, you get it from a cow with short legs.... Let's all sing this thing an' get out o' here. What do you say?
--All right.

Your may think we're crazy.
We'll have to agree.
But you bought this record
And we [got it free.]*

[*Note: The online recording ended abruptly so I had to guess at the ending. There may be more to the song. -JD. Recorded by Homer & Jethro on "Songs to Tickle Your Funny Bone," 1966.]