Hermione Granger's Guide To Gender Flip Fanfiction

Hermione gives a lecture on "gender flip fanfiction"; i.e. fanfiction depicting an AU where one or more characters has been born the opposite sex. Of course, when the ones attending the lecture are Harry and Ron... or should that perhaps be "Holly" and "Ronnie"?... it might get a little difficult to stay on track. A very meta story.