What Does the Fox Say?

My husband and I babysat for some friends a couple weeks ago. They have a three year old daughter and she is the most polite little girl in the whole world. As we were getting her ready for bed, we let her choose a couple of books to read. As she was browsing through her bookshelf for her favorites, I saw a book with a big fox on the front. We had read a book earlier that night that talked about what sounds different animals make. It hadn't mentioned a fox, and my husband and I both get a kick out of the viral video, so I pointed to the book cover with and smile and asked, "What does the fox say?" Without missing a beat, she turned to me, tilted her head to the side and asked, "Ring a ding?" Coolest. Kid. Ever.