@hightor,
hightor wrote:
I was interested to hear that line in there — was it written before Sleepy John Estes? Maybe it was an expression in common use?
There are a huge number of phrases that are used again and again in different blues tunes, none of which are necessarily related to any other. Usually common, yeah, but, if not, they quickly become "common."
Like, for a later example, Lawdy, Miss Clawdy--a common expression in Nawlins, where Lloyd Price was from, but not common in the rest of the country. It quickly became common, especially after Elvis covered it.
For an early example, "dust my broom," which has since pretty much disappeared from the venacular.