Mr. Substance/ Mr. Classy.
It's New York/Yiddish humor.
No, Mr. President.
You can’t tussle with the GOPe without slinging a little mud - at least if you plan on coming out on top. The GOPe slings mud as well, but they do it through surrogates, and manufactured controversies, such as the faux outrage over the Obama is a Muslim questioner, while all the while, pretending to be above it all. Trump sees there dishonest attacks and raises them.