This is just what it sounds like: a social and sexual dynamic that attempts to recreate the stereotypical male-dominated marital relationship of the 50s. In truth, this activity is more social and relational than sexual, although sex can play a part.
In a 1950s household, traditional gender roles are maintained. This is a type of "power exchange" based completely on gender roles. The man probably works at something "manly" like business, skilled labor, or management. He takes pride in his career and providing for the family.
The woman in this situation probably stays at home as a wife or mother. If she does leave the home, it is probably for her college studies or for pre-baby work in fields such as teaching, nursing, or other "feminine" jobs. Her main responsibility, of course, is her home and her family. This woman takes pride in cooking, cleaning, ironing, and raising her children. She may do outside activities such as volunteer work or being active in a church society.
Children are brought up with traditional values and a sense of the father being the head of the home. The man provides for, protects, and cherishes his wife; in turn, she makes his home a place of comfort and relaxation after a hard day's work.