Sonny Boy I with Big Bill Broonzy on guitar. "You got to keep on rubbing at the same old thing". Honi soit qui mal y pense: it's based upon children song Three Men In A Tub.
Lightnin' Slim [as It's Mighty Crazy]
Cramps [idem on single Dames, Booze, Chains & Boots]
Billy Boy Arnold [and in '14 as Keep On Rubbing; claims his own credits]
Both Lightnin's take it literally and portrait washerwomen at their washboard, Lightnin' Slim (Otis Hicks) even using a washboard.