Brett Kavanaugh is the latest victim of this technique. But, there have been dozens of victims I can list from Gary Hart in the 1980's to former IMF head Dominique Strauss-Kahn to Donald Trump.
"Nuts and Sluts" is easy to understand. Simply accuse the person you want to destroy of being either crazy (the definition of which shifts with whatever is the political trigger issue of the day) or a sexual deviant.
This technique works because it triggers most people's Disgust Circuit, a term created by Mark Schaller as part of what he calls the Behavioral Immune System and popularized by Johnathan Haidt.
The disgust circuit is easy to understand.