Swinging Wives (1971)
A pseudo-documentary about bored, cheating housewives.
Germany
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.
Snowman’s Land
2010A hitman plays around with the wife of an aging crime boss and is about to have sex with her but something happens.
A Summer in Portugal (2013) Ein Sommer in Portugal – Germany
A husband asks a friend to serve as tour guide for his wife in Portugal. He does so, and also bangs her in the process.