Kokosnüsse und Bananen (1989)

Fridolin has major relationship problems. He has the strong suspicion that his wife is cheating on him with another man. This is the only way he can explain the fact that he hasn't had sex for a long time. When he also receives a letter in which his wife tells him that she wants to separate from him, he decides to take things into his own hands. Together with a friend, he devises a plan to satisfy his desires and make his wife jealous at the same time.