I saw this film in a middle-school sex-education class in 1988, and even though I’d read, “Are You There, God? It’s Me, Margaret,” the movie seemed embarrassingly old and this scene particularly laughable. After excusing herself from the dinner table, the 13-year-old girl begins to shout, her excited voice ringing through her family’s Mid-Century Modern home, “I got it! I got it!!” Her mother, in a Donna Reed-type dress, beams, while her 10-year-old brother looks up quizzically and asks, “Got what?” The boy’s father turns to him and says, brusquely, “She got her period, son!”