To call Mr Trump, Mr Happy-Clappy Trump.
That's right, he's such a reality TV clown (and host) that he probably doesn't realise he's doing it, but he's continually happy-clapping. i.e., happy-clapping his audience.
I think it's odd behaviour myself, but it seems to be TV host etiquette, I got this idea this afternoon when I happened to catch TV host Grant Denyer happy-clapping his game show audience. Some of the guests on QI from the UK happy-clap their audience, I recall.
Of course, happy-clapping as far as I know so far is a term of derision meant for the kind of evangelical folks who go along to Hill Song religious frenzies in Sydney, so I will rest my case right here, sir, before it gets too smelly and along with the poo of the elephant-in-the-room, drives us out of the room and into the great outdoors to be hunted down implacably by drones sent out by the USA's Dept of Homeland Credibility.
Yrs in smug Reality TV satisfaction, etc,
While the opinions expressed above do not necessarily correspond with those held by this site, your humble blogger can understand why some might express them.