The classes are part of the 4th Annual Sex Worker Film & Arts Fest, Sex Worker, of course, being the nice, politically correct term for a hooker (SFist, being the essence of politically correct, often refers to the toothless crone who always propositions us on the way to work as a "Crack Sex Worker.") Among other things, the 4th Annual Sex Worker Film & Arts Fest, or BAYSWAN for short, features films, a sex toy bazaar, an art exhibit, a performance by Annie Sprinkle, and burlesque shows. All of which raises this question: if conventions are notorious for being great opportunities for hookers to turn tricks, who is around to turn tricks at a hooker convention?