Another possibility occurred to me--maybe it's just another verse for the limerick song:

Ay, ay, yi yi
In China they do it for chili
So here comes another verse
That's worse than the other verse
So waltz me around again, Willie

in which case the chord structure should be

D) Since our first ancestor slithered from the (A7) ooze
We've been itching to try on our dancing (D) shoes
From our( G) first step through the two-step
Through the (D) lock-step and the (Bm) goose-step
We've been (E7) working out the (A7) steps to dance the (D) blues

Charles