Caught from Behind 15 (1991)

The series that introduced the concept of all-anal features continues on its merry way into its fifteenth edition with erotic aplomb. The fun starts with Jeanna Fine in the sack with Sean Michaels. It seems that he wants to delve into some anal erotica, but Jeanna's afraid to go that route. Needless to say, they end up at the now-familiar sex clinic where Dr. Raven Richards teaches them the ins and outs of back door boffing. Raven sends each of them off with surrogates, with whom they'll be introduced to the wanton world of anal spelunking. [...] Long on anal action and short on much else, this opus will surely please fans of the series or the genre.