So says the screenwriter, anyway. "The wet shirt scene" — you know the one — "was intended to be a total full-frontal nudity scene." He doesn't know why it got changed: "Maybe they felt it would have taken too long to get him undressed. They could have always cut to him standing on the bank diving in naked so it might have been something about Colin's anxiety about love handles or something." Or maybe they remembered that they were making a Jane Austen adaptation? Anyway, it's fine. This is why porn parodies exist.