"Morthylla" by Clark Ashton Smith

Anacreontic: written in the style of the ancient Greek poet Anacreon, known for his celebrations of love and wine

incitant: an inciting agent

fescennine: scurrilous, obscene

lissom: thin, supple, graceful

lupanar: brothel

senescent: growing old

importunate: persistent, especially to the point of annoyance or intrusion

The picture used is an illustration for the story by WH Silvey, as published in Weird Tales.

To follow along: http://www.eldritchdark.com/writings/short-stories/142/morthylla

No, you're not crazy, it really does go into repeat mode there at the end.