Les mille et une perversions de Felicia (1975)

Rebecca Brooke and Jean Roche are a young married couple who are about to get seduced but good—but not by each other—in Les Mille et une perversions de Felicia (1975), another first-rate X-rated sextravaganza from Max Pécas. The doting duo invites pouty teener Béatrice Harnois to stay with them in their country villa, but Ms. Harnois is a big horndog who won’t stop until she's given both her hosts a snog. Insatiable in all things sexual, Bea and her beauteous B’s aim to please (and get pleased, if you please), and though she starts out as a tease, this temptress definitely comes through in the end.