This one always seems bring a little cheer when people are grouchy. It's a favorite in our song circle in Sacramento. It may pre-date the Smothers Brothers rendition.
-Joe Offer-

STREETS OF LAREDO
(Parody by Milt & Marge Lev and Walt Robertson, with help from a very large bottle of wine)

As I walked out on the streets of Laredo,
As I walked out in Laredo one day,
I spied a young cowboy all wrapped in white linen
All wrapped in white linen as cold as the clay.

I see by your outfit that you are a cowboy
You see by my outfit that I am one too
We see by our outfits that we are both cowboys
For I have an outfit and you have one too.

My outfit fits neatly; it's a neat-fitting outfit
Your white linen neat-fitting outfit fits you
So we are two cowboys in white linen outfits
White linen outfits that fit neatly too.

When I'm out of my outfit, I am not a cowboy
When you're out of your outfit, then neither are you
But we're both fit out in our neat-fitting outfits
So I am a cowboy and you are one too.

Let's see if your neat-fitting outfit will fit me
Let's see if my neat-fitting outfit fits you
If my outfit fits you and your outfit fits me
Then we can trade outfits and they will fit too.

As the outfitted cowboys were trading their outfits
Their neat-fitting outfits of white linen hue
An outlaw passed by in his black outlaw outfit
And spied the two cowboys and shot up the two.

As I walked out on the streets of Laredo,
As I walked out in Laredo one day,
I spied two dead cowboys all wrapped in white linen
All wrapped in white linen as cold as the clay.