When a Klingon says bortaS bir jablu’DI’reH QaQqu’ nay,’ it’s not good. It means “Revenge is a dish best served cold” and what is likely to follow is some sort of death blow.
So when Edward Brawer, the developer of the dock replacement software uBar, had pirates of his Mac app in sight, he set his phaser to amusement. Users who ripped him off soon saw the titles on apps and folders switched to the Klingon language.