Hokum is a particular song type of American blues music - a humorous song which uses extended analogies or euphemistic terms to make sexual innuendos.
Definitions of hokum at Dictionary.com. ... 2. elements of low comedy introduced into a play, novel, etc., for the laughs they may bring.
ho·kum. Etymology: probably blend of hocus-pocus and bunkum. Date: 1917. 1: a device used (as by showmen) to evoke a desired audience response. 2: pretentious nonsense