Is that Kurapika learning to go along with things instead of being a complete control freak, or Leorio learning a lot of very nice and handy oral tricks? A question that deserves to be answered.

Just, maybe not right now, because Leorio has to pull back to laugh a little bit down at the floor. "Like you're one to talk!" he mocks him. Them being stubborn dumbasses is half of why they got together. And he's very pleased that he is at times completely in the right on calling Kurapika a dumbass. Maybe not as much as Kurapika is justified in calling him one, but...

Eh. Still grinning and unable to stop himself, he gets back to work. If he can keep Kurapika talking while he's at this, after all, then that means it's just all the easier to hear the way his voice changes.