"Oh, a military family? I knew I liked you." It's jokingly said, but there might be a kernel of truth, there. He did marry a captain's daughter, after all.

But he falls into the instruction easily enough. He's clumsy the way of anyone is with a new skill, but Watson is definitely trying. If there's any hesitation at being taught by a teenage girl, he certainly isn't letting it show. "Well, any new skill needs study, why should this be any different? I promise I will practice."