When an otherwise ladylike female subtly lifts one cheek in order to decompress air from her derrière. A skillful practitioner will couple this art with conversation or laughter as to dissuade any suspicion should the tuft of air carry an unpleasant odor.
George: Did somebody just fart?
Nancy: I thinkRebecca pulled a sly goose.
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi