The Nuremberg Defense is a legal defense that essentially states that the defendant was “only following orders” (“Befehl ist Befehl”) and is therefore not responsible for his crimes. The defense was most famously employed during the Nuremberg Trials, after which it is named.
Source: Wikipedia, Nuremberg Defense
The QA Department often hears the phrase “but it is signed-off” used by staff & clients to defend the indefensible. At this point, it is the QA Department’s job to persuade the team to do the right thing.