Swap Meet at the Love Shack (1973) aka Liebesmarkt
A lingerie salesman and a postman get to bang some housewives. Plus, swinging and other sex stories.
exhibitionism
Burning Desires of a Housewife (2006)
A housewife hates her current life cleaning houses for her husband and recalls her former life as an erotic photographer. She used to photograph naked models. Some of them were couples who had sex in front of her camera.