Overview
Hokum is a particular song type of American blues music—a song which uses extended analogies or euphemistic terms to make humorous, sexual innuendos. This trope goes back to early dirty blues recordings, enjoyed a huge commercial success in 1920s and 1930s, and is used from time to time in modern American blues and blues rock.
An example of hokum lyrics is this sample from "Meat Balls", by Lil Johnson, recorded about 1937:
Terminology
"Hokum", originally a vaudeville term used for a simple performance bordering on vulgarity, but hinting at a smart wordplay, was first used to describe the genre of black music in a billing of a race record for Tampa Red's Hokum Jug Band (Tampa Red and Georgia Tom, 1929). After producing a big hit, "It's Tight Like That", with Vocalion Records (and its sequel) in 1928, the musicians went on to Paramount Records where they were called The Hokum Boys. Other recording studios joined the fray using similarly named ensembles. The application of "hokum" to describe the musical approach of these bands was fostered by Papa Charlie Jackson with his "Shake That Thing" (1925).
The term "hokum blues" did not become a formal designation of a style until 1960s. "Hokum" is also used to describe the low comedy acts that were used at the turn of the 20th century to lure audiences to musical performances. In the words of W. C. Handy, a veteran of a minstrel troupe, "Our hokum hooked 'em" outside the opera house, so that "ticket sellers would go to work".
From Wikipedia (CC BY-SA 4.0).