Pornographic Westerns?

Whittling away the hours on WikiPedia as I research a Western stage comedy that I’m writing (did a reading tonight of the first draft with some actor friends and it’s coming along nicely), I came across this choice sentence:

The most rare of the Western sub-genres, pornographic Westerns use the old West as a background for stories primarily focused on erotica.

Accoording to WikiPedia, there are at least 18 subgenres of Westerns. The one I’m writing will fall into the postmodern satirical subgenre, which is something I just made up.