So Trump is on the verge of giving what will be the most important speech of his tenure, namely addressing the UNGA so how does he precede that event? Well he tweets out a fake video of him hitting a golf ball which knocks Hillary over as she's boarding her plane, nick names the NK leader "rocketman", and uses his initial meeting with a few of the seated UN leaders to brag about his hotel which is nearby.
The next potential for disaster is of course will he stay focused on the teleprompter during his speech or will he wander off into lala land and start complaining that the only reason Hillary won the popular vote is because of "millions" of illegal voters, or how many "millions" of people attended his inauguration, etc., etc.