I think the best way for an ordinary user to save a question is by making an edit.
Let's take the question you used as your example. In my mind, this question is badly flawed for a few reasons:
- The title is too long
- The question is too scant (it's not even a complete sentence)
- There are grammatical errors
- No example usage is given
- No indication is given whether this should be a complimentary or disparaging term
With all these strikes against it, I think it was probably right to put the question on hold. I've never thought we ought to coddle users who put such little effort into their questions.
But you are asking what can be done. I say, if you really think this question is interesting enough to salvage, then the best course of action would be to click the edit button, and:
- Give the question a better title
- Expand the body of the question
- Fix the grammar/punctuation problems
- Provide an example usage
- Indicate whether or not the term should be endearing or disparaging
Granted, you'll have to use a little guesswork when it comes to that last one, but you can always leave a comment saying that if you've guessed wrong, the O.P. is welcome to clarify with another edit.
By doing this, you won't just be salvaging the question – you might also be providing a model that can be used by the O.P. in future questions, thereby bettering the site.