Do you remember when Jack is giving orders to himselves in the Locker and he says "Scandalise the lateens"? Course you do!
And you've probably already seen
The Glossary of Nautical Terms.
So you know this:
Scandalize - To reduce the area and efficiency of a sail by expedient means (slacking the peak and tricing up the tack) without properly reefing, thus slowing boat speed. Also used in the past as a sign of mourning.
But I didn't, and it's just made me very, very happy.