The word "art" has long been a code word for erotica in certain contexts. "Art photos," "art films," "art house" are all terms created by clever entrepreneurs to market porn -- soft and hard -- to audiences who could more easily accept the idea under this respectable rubric. (It was also an effective way to confound law enforcement.) In the sixties the term "art film" could mean Bergman masterpiece, Andy Milligan sleazefest, or Radley Metzger classy Euro-erotica.