Darth Maul: "Filth, you will pay for your insolence."
Hondo Ohnaka: "Insolence? We are pirates! We don't even know what that means!"

Not gonna lie, part of me likes the line because it clearly references Pirates of the Caribbean. Or at least gives one a POTC vibe. Hector Barbossa: "A lot of long words in there, Miss. We're not but humble pirates."

Otherwise, I may go for the classic: "Traitors! Scum! I'm so proud." Classic Hondo.