Though you appear to decry use of derogatory nicknames, it is among the rhetorical tactics of the apparent President-elect.* During his campaign, he used such a nickname for each of his opponents: Low-Energy Jeb, Little Marco, 1 for 38 Kasich, Lyin' Ted (which some of his supporters attempted to reclaim as Lion Ted), and Crooked Hillary. Now watch leftards turn the practice back at "One-Term Donald".
* Faithless electors could yet keep Mr. Trump from officially becoming President-elect on December 19. There are eight so far.
There is actually one, not eight. The seven people who already were not going to vote for Trump (because they're pledged to Hillary) don't count.
That said, "One Term Donald" sounds like a great nickname. Here's hoping.