Wringo, an X-rated, sideshow-themed stag party attraction of mysterious origins. BRYN MAWR FILM INSTITUTE 824 W. Lancaster Ave., Bryn Mawr, 610-527-9898, brynmawrfilm.org The Mighty Ducks (1992, U.S., 100 min.): “Flying V!” Sat., April 11, 11 a.m., $5. Talk Cinema: A cerebral film…