Sherlock, with a similarly empty coffee cup, comes to a different conclusion: he snaps his fingers, then claps his hands together sharply like he's summoning an errant dog until the Extra server comes by again with refills. He still finds the concept of tipping Extras to be intrinsically insulting; however, as his own income now largely depends on Extras tipping him, he's grudgingly considering it. But that doesn't mean he has to like it.

"A bit," he says with raised eyebrows. "I'm beginning to wonder what you're hoping to accomplish."