Robert Lockwood, Steady Rollin’ Man.
What is a “Steady rolling man?”
Steadily getting laid.
By a Big Legged Woman.
Actually, I have no idea but I love the blues.
Nor do I, but generally I believe the Blues is about not getting laid, and Jazz is about getting laid. 
Huh. This might explain why one guy at work keeps calling me “roller”…
It has a variety of meanings in the Black rural vernacular. One is suggested by Paul Oliver in this link:
second full paragraph, page 19.
Thanks!
Ask him. (link to website of longtime blues guitarist Steady Rollin’ Bob Margolin - solid player).