The challenge was presented to Sito as a prerequisite to enter Worf's advanced mok'bara class. She was blindfolded and told to defend herself as Worf attacked. After being knocked down several times, Sito removed the blindfold and labeled the test unfair.
Worf lauded her, saying she had passed. He explained that it took courage to say the test was unfair. He added "But perhaps the next time you are judged unfairly, it will not take so many bruises for you protest."
At least one Klingon dramatisation of the Battle between Kahless and Molor featured the phrase at Kahless' first appearance, when he declares that he would rather fight (and die) than live under Molor's tyranny. (TNG: "Firstborn")