Sophisticated Conversation

Reese's conversations are starting to be more and more sophisticated. Today she was playing with Daddy, got frustrated with him, and said, "You must not have heard about the legend." No idea where that came from. Perhaps a Scooby Doo show she watched recently, but I don't remember that line. She then continued the conversation saying that she was "bewildered." Where does she hear these things? She seems to be using these words/phrases correctly. Crazy girl.