[Washi]

I've notice something from Trump (other than his bombastic narcissism); his tweets and other statements often end with a single word or phrase that he wants to leave in the reader's/listener's mind.

e.g.: "That is why all of the polls were so wrong and why he got far more votes than anticipated. Bad!"

It's a rhetorical and propaganda device that a lot of his supporters on FR have also adopted.

[Fundamentally Fair]

I think it’s less of a rhetorical device and more of just being inarticulate.