I was listening to some blues the other night and there was one verse that shined above the others: "A hand full of gimme and a mouth full of much obliged". The lyric comes from a song by axe-murderer/musician, Jimmie Strothers. No joke, this guy really was an axe-murderer and all the recordings of him were made in a prison in Richmond, Virginia.
I don't know what it was exactly about the verse that struck me so, but I couldn't get it out of my head the whole day. I kept guessing at what the metaphor might mean and nothing occurred to me until I wrote it down. I realized that it might stand for something a little less poignant and a little more sexual. The image is in fact quite pornographic.
Now one might accuse me of just having a sick mind, but this is not the first time sex and/or its fruits have appeared in blues music. Have a listen to Mississippi John Hurt's "Lovin' Spoonful" or Charley Patton's "Shake it and Break it". Patton moans about missing the taste of his sweet jellyroll, and I'll let you guess what he might referring to. Even the Empress of the Blues, Bessie Smith, mentions how the rusty springs in her bed could use a good pushin'.
Similar to the spirituals sung by their ancestors, blues musicians had to use metaphor to get across their ideas about love and sex. One could argue that all genres of music follow this implicit rule of self-censorship, but none are as creative with it as the Delta blues musicians. If you pay close enough attention to what they are singing, you'll start to pick up on these deviant references.