He whistles at that, not bothering to mask a deep grin. "Look who's smart. Takes a lot of focus and skill to learn that much at your age, y'know. I bet you're gonna have the most brains in the land."

He's mostly just taking cues from Dean's conversations with him, when he was her age, but they meant a lot to him, and it's always good to see the younger kids using their noggins so much, y'know?