I have a recording of Clarence Ashley singing it; here's his version. I've heard a couple of the verses in "Old Joe Clark" as well.

Whoa, mule, Whoa mule I say
Keep your seat, Miss Liza Jane, Hold Right to the sleigh

I went up on the mountain to get me a sack of corn
Racoon set his dog on me and the possum blowed his horn

Alternate chorus
Whoa, mule, Whoa mule I holler
Tie a knot in that mule's tail or he'll go through the collar

Went up on the mountain, to give my horn a blow
Thought I heard some pretty girl say, yonder comes my beau.

I would not marry a tall slim gal, tell you the reason why
Her neck's so long and stringy I'm afraid she'll never die.

I went to kiss my gal last night, I thought I'd do it sneakin'
I missed her mouth and hit her nose and the doggone thing was leakin'.

A peanut sitting on a railroad track, his heart was all a-flutter
Around the curve come a passenger train, toot, toot - peanut butter!