[The phrasing is enough to bring a familiar wrinkle to Benedict's nose, a common reaction to when Byerly gets especially vulgar, but no actual admonition is given. It's part of their rapport: Byerly says something rude, Benedict gives him the stinkeye, they move on.

He doesn't chime in, too tongue-tied with anticipation to get lippy or try to hurry things along, but his expression becomes slightly more imploring. Out with it, please.]