The response he gives is somewhat accusing. "You've never heard it?" There is a momentary pause as he tries to gauge whether it's a genuine statement or if he's trying to pull the wool over his eyes. There is a multitude of other possibilities, sure; education, age, memories, or perhaps upbringing.

Whatever the case, he answers the question. Though it seems like he doesn't exactly want to. "It's another word for pleasant social customs. Something you may find aplenty in circumstances such as this."