The Under-Gifted
Les sous-doués (original)
Starring Daniel Auteuil, Michel Galabru, Maria Pacôme, Philippe Taccini, Hubert Deschamps, Raymond Bussières, Étienne Draber, Tonie Marshall, Richard Bohringer, Françoise Michaud
It's a comedy movie, and has a rating of 6.5 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Italy.