1/2
[ Okay, so admittedly, Usopp is a little bit scared that this guy already knows who he is. Maybe he saw his first broadcast the other day and is referencing Usopp's boasting? That's the best guess he has - unless this guy is from the Grand Line, too, but even then, Usopp's not- actually infamous. So that seems very unlikely.
He skips a beat before responding, somewhat wary of how to reply to that. In the end, he decides to just roll with it and just hope this guy doesn't make a doll of him or throw darts at his face - especially not his actual face. ]