Fonzy is a 2013 French comedy film about a fish deliveryman in Paris becomes involved in a legal battle with his sperm donation children. The film is a remake of the Quebecois film Starbuck (2011).
Twenty years ago, Diego Costa, under the pseudonym "Fonzy", repeatedly donated sperm to the sperm bank. Today, at 42, he is a deliveryman in a family-owned fishmonger and leads a teenage irresponsible and blundering life. While his wife Elsa learns that she is pregnant, his past resurfaces. Diego discovers he is the father of 533 children, 142 of them want to know who is Fonzy.