Sometimes I have difficulty understanding Holo and Lawrence's wit, such as in this conversation on pages 48-49 of volume 9 of the light novels:
Holo: Aye, we're all greedy, always running about in service of our own gain.
Lawrence: On that count, I'm forced to agree. Of course...Of course, if I weren't so greedy, I'd be able to buy you tastier food.
Holo: Mm. But is seeing my pleasure not in your interests as well?
Lawrence: If you were truly so easily bribed by food, then that might be so.
Holo: And what other methods could you use?
Lawrence: If food is out, then with words or manners.
Holo: Neither of which is so reliable in your case.
Lawrence: (Quoting Eve) Or you could imagine you've been deceived and decide to trust both. They might well turn out to be genuine.
Holo: That isn't what I meant to say.
They were originally talking about Holo's attempt to get a narwahl, but then it branched off into this conversation.
With line 8, Lawrence feels that he has effectively put Holo in a corner. The text also mentions that line 8 is something Eve previously said. The text then states that Holo has no counterattack. However, when Holo makes her reply with line 9, Lawrence feels like she has done something unfair. I am uncertain as to why Lawrence feels as though he has won, and as to why he feels that Holo was unfair with line 9.