President-elect Donald Trump does not have the fortitude of character and emotional restraint to be able to handle the criticism and jokes directed at him. Presidents always be made fun of by their citizens. Good presidents need a thick skin and the ability to not take jokes personally or retaliate against comedians and other critics. If Trump's behavior during the election is any indication, he will be very offended and outraged by jokes made against him and will attack people personally, which is inappropriate for a president of the United States.
Donald Trump has already shown repeatedly that he cannot take criticism nor fun poked at him. He has a knee-jerk instinct to lash out against anyone who has anything to say about him that he finds negative. For now, he's jumping on Twitter in the wee hours of the morning, but who knows what this might escalate to?
This past weekend alone, Trump has insulted and attacked two popular shows that dared oppose or ridicule him in some way. The first is the now-famous "Hamilton" stunt Friday, when one of the actors, on behalf of the cast, read a prepared statement to Vice President-elect Mike Pence, who attended the show. Although Trump has spent a large part of his career as a pop-culture figure, he has long seemed unable to handle any of the negative attention that it brings.
Trump has already demonstrated that he can't take a joke. He can't take criticism and he won't be able to handle the kind of vitriol President Obama faced for 8 years. He's got a short fuse and a thin skin, which aren't a good combo when you are a public figure and about to take our nation's highest office. He doesn't understand the First Amendment or libel laws, and that's a recipe for disaster.