Au lit il faut du ressort... (1973)

Original title: Das sündige Bett

An antique bed relates passionate stories about various people who have made love on it throughout the decades of the 20th century. Said folks include a sweet young virgin, a sly prostitute who helps a jilted woman get revenge on her unfaithful husband, a German soldier fighting in World War II who's on leave for two hours, and a carefree modern couple.