Maybe you're one o' those guys who's got a "professional face" or whatever. Like a stage persona . . . 'cuz there's no way anyone'd wanna do business with you if you acted the way you usually do.

[Like he's one to talk. But he doesn't really see the point in pulling punches here; obviously Nice knows he's a jerk and doesn't care, so why not just say it? Repeatedly. He probably takes pride in it.]

So are you, like, a genius detective?

[What other explanation could there be for people putting up with him? Even though the idea of this guy being a genius is kind of hard to swallow. But it's not like Leon's not familiar with weirdos who have one skill they're really good at . . . ]