Don't think this is a light film just because it's a comedy made with Mexican actors. There are many layers here and much clever satire not only on the Mexican society of that period but (as always with Bunuel) human behavior in general. The ironic detachment of the director is never so far as to render these characters unrealistic caricatures; far from it, they're as fully real as anything in 'Los Olvidados,' except here things are examined from a much less cynical angle. Comedy is, after all, the flipside of tragedy and if comedy sells better, you only run the risk of being misunderstood by most of the audience on a very superficial level; on a deeper level even the commonest comedy fan implicitly gets the message. This film is in many ways similar in its structure and tone (and on a deeper level even in subject matter) to Alexander Payne's 'Citizen Ruth' and 'Election' or Todd Solondz's 'Welcome to the Dollhouse.' Except here, Bunuel shows less 'cruelty' than in most of his other films; here he tries his hand at an homage to certain great American comedies of the '30s and '40s which managed to use comic misadventures to veil serious messages underneath. The difference is that Bunuel consciously planned and fully intended this result whereas the Americans may have just ended up there unexpectedly and unconsciously.