What A Game Of Chicken Butt

I have this two year old that spends each day with me. She is cute as a button and smart as can be. So the other day we are driving around running some errands, and I can see her in her car seat in the back, in the rear view. She is looking at me in the mirror and she smiles and says “Sue guess what?” and I smile and say “What?” she says nothing just stops smiling, again “Sue guess what?” I say “What?” no response. We do this about four more times until she is frowning at me in the mirror, I start to explain to her in a rather animated way that you speak to the very young that she needs to tell me ‘a what’ after saying guess what. She stares at me with a somewhat confused, frustrated two year old look and a minute later I hear, “Suuuuue, guess what?”……. And in total exasperation I say “Chicken butt.” Her face lights up, she grins, nods her head and says “YEAH!”