It would be really interesting to have this much undeserved confidence. Who in their right mind thinks they have a better understanding of a language than an grandma who's been speaking it for her entire life? And on top of that, he goes in and tries to "correct" them. It sounds like a recipe for an extremely awkward relationship. Here are some more entitled people and their demanding boldness, as well as some facepalm moments of mystifying dumbness.