I'd never heard that "term". What's it mean (and don't ask me to go look it up somewhere, as you seem to already know what it is). Thanks.
See below.
I think the end of a crawling snake is where you can usually find Ric's black nuts
Perfect explanation!
First recorded reference I know of was Black Snake Moan by Blind Lemon Jefferson (1926)
Mmm, mmm, black snake crawlin' in my room
Some pretty mama better come and get this black snake soon
Lots of, err, interesting imagery in old blues.