Tender Scoundrel(1966)

With a little French eclair or a Swiss souffle - Ona yacht with a crazy nymph - In the Tropics with a torrid butterfly...It's BELMONDO...The World's #1 Swinger?

Tony Maréchal is a professional seducer. Having conquered countless women, proclaims that there is none that can resist his charm. To prove this makes a difficult challenge: to seduce baroness Minna von Strasshofer.