The Seven Year Itch is a 1955 American romantic comedy film directed by Billy Wilder, from a screenplay he co-wrote with George Axelrod from the 1952 three-act play. The film stars Marilyn Monroe and Tom Ewell, who reprised his stage role. It contains one of the most iconic pop-culture images of the 20th century– Monroe standing on a subway grate as her white dress is blown upwards by a passing train. The titular phrase, which refers to a waning interest in monogamous relationship after seven years of marriage, has been used by psychologists.

Plot

Richard Sherman is a middle-aged publishing executive in New York City with an overactive imagination, whose wife, Helen, and son, Ricky, are spending the summer in Maine. When he returns home from the train station with the kayak paddle Ricky accidentally left behind, he meets an unnamed woman, who is a commercial actress and former model. She rents the apartment upstairs while in town to make television spots for a brand of toothpaste. That evening, he works on reading the manuscript of a book in which psychiatrist Dr. Brubaker claims that almost all men are driven to have extra-marital affairs in the seventh year of marriage. Sherman has an imaginary conversation with Helen, trying to convince her, in three fantasy sequences, that he is irresistible to women, including his secretary, a nurse, and Helen's bridesmaid, but she laughs it off. A potted tomato plant falls onto his lounge chair; the woman upstairs apologizes for accidentally knocking it off her balcony, and Richard invites her down for a drink.