The original line was: "They'll be quaking in their fancy English boots!"
The new line is: "All those fops will learn to fear The Pirate Queen" (referring to the ship).
Same kind of idea--the English are all show (fops who care more about fancy boots than about fighting), and the Irish will teach them a lesson. I hope they're able to make "fop" really clear, though; as good as Stephanie's diction is, if that word gets muffled at all, the "family-friendly" designation of this show goes bye bye....