This may be a bit irrelevant at this point, but I'm not sure how accurate verses that come after the well-known "Ring around the rosy" verse are. The one I know of goes:

Cows in the meadow
eating buttercups
ashes, ashes,
we all stand up.

Maybe kids wanted a reason to stand up after they fell down, and so made up a rhyme for themselves. What other "stand up" verses have you heard?