Oklahoma: Where the wind whistles through your teeth

We had a friend from Oklahoma over for dinner tonight and we asked Luke if he wanted to go back to OK with said friend.
This is how the conversation went:

Dad: "Luke you know you would have to learn a different language."
Luke: "Why? I already know how to say y'all."

We haven't laughed that hard in a while and had no idea that he had such a clear grasp of southern dialects. I guess we need to monitor his TV viewing a little more carefully.