Trump dedicated a full ten minutes to a vitriolic rant about his closest rival for the GOP presidential nomination, creationist neurosurgeon Ben Carson.
The attacks were so personal the applause started to die off and the crowd became visibly uncomfortable. Talking about Carson's claim in his autobiography of having a "pathological temper" as a young man, Trump said:
Carson is an enigma to me... He said that he’s ‘pathological’ and that he’s got, basically, pathological disease... I don’t want a person that’s got pathological disease.
If you’re pathological — there’s no cure for that, folks. There’s no cure for that.
If you’re a child molester, a sick puppy, a child molester, there’s no cure for that. There’s only one cure, we don’t want to talk about that cure. That’s the ultimate cure. Well, there’s death, and there’s the other thing.
Then, in a jet-fuel-doesn't-melt-steel-beams moment, Trump decided to try and reenact Carson's anecdote about stabbing a friend, only to have the blow defected by a metal belt buckle.
Stepping away from the podium Trump got his own belt buckle out on view to demonstrate how it moved around and wouldn't stop a blade. Then he asked if anyone in the audience had a knife to come try stab him. (In the belt.)
If nothing else, the resulting gif is a fitting visual metaphor for the feeling of nightmareish what-the-f--kery inspired by the sh-tshow we have to call Trump's presidential bid.