Annie sits in my lap, she presses her face against mine and I whisper to her, "You are so smart and so beautiful and I love how kind you are to babies and animals. You have a big heart and..."
She leans in close to kiss me and accidentally bangs me with her head.
Me: "... you have a big heart and a hard head."
Annie: "I guess that's better than having a big head and a hard heart!"