Having dispatched “Lyin’ Ted” and “Little Marco,” presumptive Republican presidential nominee Donald Trump has begun referring to Democratic rival Hillary Clinton as “Crooked Hillary.” Late last week, Clinton decided to fight fire with fire and debuted her own nickname for Trump: “Dangerous Donald”—an effort met with almost universal derision to the extent that it resonated with the public at all.

Perhaps it is to Clinton’s credit that belittling schoolyard epithets don’t come easily to her. But the Democrat’s supporters will be dismayed to learn that “Dangerous Donald” was not an off-the-cuff jab but rather the result of long thought and careful, cautious deliberation. This is made abundantly clear by a confidential campaign memo provided exclusively to vanityfair.com by an anonymous, Dumpster-diving source in Brooklyn Heights.

Could Clinton have done better than “Dangerous Donald”? You be the judge . . .