Well, that's another left turn for this conversation to take. Poe stares in disbelief for a moment; he has a much easier time doing sudden directional changes in combat, thanks. Because this leads to a lot of questions:

1) How does Finn even know about this?
2) Does Finn mean in the general sense?
3) Or does he mean specifically for Finn?
4) And that option is incredibly messed up. Not even a question, just a thought.

With all that colliding in his brain, the best he can manage is: "...what?"