This is the most basic, logical, obvious question that would be asked, and would need to be addressed, in any hypothetical where such a potential law is being discussed.
Essentially, invoking such a term while being unwilling/unable to objectively and clearly define it suggests dishonesty/deception in the argument. Not that these negative qualities necessarily exist, but it’s perfectly reasonable to be frustrated in a discussion where party A uses a term, party B asks for a clarification/definition, and party A responds to that with a refusal to do so and a personal attack.