Then it came to me -- right after Trump went along with the bigot at the rally who proclaimed President Obama is a Muslim. Whereas John McCain summoned up his dignified side in 2008 when the woman in red pulled that stuff, Trump chortled with glee.
My thoughts turned to young Alvy Singer in the movie "Annie Hall." The little boy puts up with a bumptious friend of his father's, just long enough, and then he turns away, muttering the famous phrase.
Enjoy the video.