"Principal Charming" is the fourteenth episode of the second season of "The Simpsons". It first aired on the Fox network in the United States on February 14, 1991. In this episode, Marge's sister "Selma" is looking for a husband, so Marge tells Homer to help her find one. Things go wrong, however, when Homer invites "Principal Skinner" over for dinner and Skinner instead falls for Selma's twin sister Patty.