Servantes sans culotte (1979)

When Bernard comes home from work he is welcomed by his wife Nincia and her maid Van. He is given a bath and a massage before the evening meal. The two women are Asian as is the food and everything else in his life. But Nincia fears that he might get tired of her and tells her best friend, Li, about it. She suggests offering him a second wife, discarding Van who must remain Nincia's servant. When three girls enter the lounge, we immediately know that the wedding night has come for Bernard who is introduced to Lo Yan, Ty Lan and Li. He begins the wedding meal with his new wife but very soon all of the participants start the real fiesta. Ty Lan disappears after a few seconds of blow-job and all the others celebrate the new union and Bernard has more than one opportunity to use his crank. But he has a secret blonde lover and tells her that the best way for them is for her to become acquainted.