Les Tontons flingueurs (English: Crooks in Clover, also known as Monsieur Gangster, literally Gun-toting Uncles) is a 1963 French-Italian-West German crime comedy film with French dialogue, directed by Georges Lautner.

Its reputation has grown over the years to cult status and it is now a French television classic, with snatches of dialogue and names of characters (like the prostitute Lulu la Nantaise) becoming part of popular culture.

Screenwriter Michel Audiard considered the scene useless but director Lautner included it in homage to the film noir Key Largo.

His modest, quiet life is disrupted when his childhood friend, Louis "the Mexican", who has become the boss of a gangster organisation in Paris, summons him to his deathbed.

Protected by the loyal hitman Pascal, Fernand moves into the Mexican's suburban mansion, where he is welcomed by Maître Folace who is the organisation's lawyer, Jean the butler who is a former housebreaker and Patricia, who hopes to twist her new "uncle" around her finger.