My Wife, the Hooker (1977)

After five years of marriage, Stephanie is unsatisfied with her husband Al, she then visits a house of prostitution run by Josephine Farmer. She gets hired as a part-time lady of the afternoon after Farmer tests her lesbian style. Meanwhile Al beds down with next door neighbor Ginger, on the pretense of bumming a cigarette from her. Stephanie gets a first customer who's quite uptight and she relaxes him patiently bringing him to a money shot. Hubby Al finds the madam's business card in a book Stephanie was reading, and he heads there, nicely serviced by whore Toni.