I found the Dave Van Ronk version here :
Yas Yas Yas
Mama bought a chicken; well, she thought it was a duck,
Put him on the table with his legs stickin' up.
Well, now, in comes sis with a spoon and a glass
And starts dishin' out the gravy from his yas-yas-yas.
Mama, mama, take a look at sis.
You know she's out on the levee and she's dancin' like this.
Well now, come on in here, sis, and come in here fast,
And stop that shakin' your yas-yas-yas.
Well, the old folks do it and the young folks, too,
And the old folks show the young folks just what to do.
Well now, you shake your shoulders, you shake 'em fast,
And if you can't shake your shoulders, shake your yas-yas-yas.
Well, Mr. Dillinger rode up to a gasoline station.
He says, "This looks like a pretty good location."
Well, the attendant says, "Do you want my gas?"
"Well, it's either your gas or your yas-yas-yas."
'Way down yonder in St. Augustine,
You know, a black cat sat down on a sewin' machine.
Well now, you know, that machine, it sewed so fast,
It sewed ninety-nine stitches in his yas-yas-yas.
'Twas the night before Christmas; all through the house,
Not a creature was stirring, not even a mouse.
Well now, out on the lawn there rose a big crash.
It was Santa Claus slidin' on his yas-yas-yas.