Шалуньи в Гон Конге (1981) Les jouisseuses de Hong-kong

Three boys and three girls arrive at a holiday resort by the sea. At night each couple seem to enjoy each other. Yet the following day, the girls complain about their boyfriends' selfishness. One of the girl decides to organise a sort of sex-contest to see which of the three boys is able to make love for the longest spell of time. The contest takes place on a desert island. The winner has been able to hold it for more than half-an-hour. The loser will pay the others a drink..