Donald Trump is a domestic terrorist; only his form of terror doesn’t boil down to blowing things up. He’s the 70-year-old toddler who knows nearly nothing, hurls insults, has simplistic solutions for complex problems and is quick to throw a tantrum. Also, in case you didn’t know it, this toddler is mean to girls and is a bit of a bigot.

It isn’t so much that he is a strict disciple of radical ideology, but rather that he is devoid of fixed principles, willing to do anything and everything to gain fame, fortune and power. He has an endless, consuming need for perpetual affirmation. This is a bully who just wants to be liked, a man-boy nursing a nagging internal emptiness.

He’s fickle and spoiled and rotten.

So, when he loses at something, anything, he lashes out. When someone chastises him for bad behavior, he chafes. This is the kind of silver-spoon scion quick to yell at those he views as less privileged, and therefore less-than, “Do you know who I am?”We do now, sir.

After Trump got trounced in the first debate, he went full anti-science, insisting that flimflam applause-o-meter polls, many from conservative websites, were in fact proof positive that he had won the debate.

During the debate, Hillary Clinton delivered a devastating kidney punch, calling out Trump for his sexist, bigoted comments about a Miss Universe, Alicia Machado, who had apparently gained too much weight for Trump and his pageant.

Trump has been smarting over this ever since.

He spent the week sulking and careening from fat-shaming Machado to slut-shaming her, shooting off a manic insomniac’s witching-hour tweet storm that called Machado “disgusting” and the “worst Miss U” and encouraged his followers to “check out” an alleged “sex tape” and her past.

Trump was apparently oblivious to the can of worms this would open about his own past and that of his family.

This is the same man who marveled on television about his daughter Ivanka’s “very nice figure” and mused, “I’ve said that if Ivanka weren’t my daughter, perhaps, I would be dating her.”This is the same man who said on a radio show that he marveled at the beauty of a 12-year-old Paris Hilton, the daughter of his friends, saying when she walked into the room — at 12! — “Who the hell is that?” He would then go on to admit that he had watched Paris’s sex tape.

This is the same man who told Esquire in 1991, “You know, it doesn’t really matter what [the media] write as long as you’ve got a young and beautiful piece of [expletive].”This is a man who, as Buzzfeed reported Friday, made his own cameo in a Playboy porno in 2000, though thankfully not as an erotic actor.

That man is lecturing someone else about their past and calling them disgusting?And, early Friday morning, Trump tweeted: “Anytime you see a story about me or my campaign saying ‘sources said,’ DO NOT believe it. There are no sources, they are just made up lies!”Hours later he repeated the assertion in another tweet: “Remember, don’t believe ‘sources said’ by the VERY dishonest media. If they don’t name the sources, the sources don’t exist.”But CNN’s Brian Stelter shot back on Twitter: “Tell that to your campaign aides who insist on anonymity.”AdvertisementBut perhaps even more absurd is that this admonition about sourcing comes from Trump, who often prefaces his offenses with anonymous-sourcing phrases like, “A lot of people are saying …” Just because you use that as a vehicle to spread a lie, Mr. Trump, it doesn’t mean that other people do, too.

Last week CNN obtained Trump campaign talking points which instructed his supporters to bring up Bill Clinton’s sexual scandals as an attack on Hillary.

I think Trump is falling into a trap here. I think in his anger and haste he is severely underestimating the empathy people have for a betrayed spouse, who might, in misdirected anger, blame the victim, believe the unbelievable, and grant unearned forgiveness. Love makes people do crazy things, and a broken heart isn’t a physical wound but a psychic, spiritual one. It hurts like hell and people often respond in ways that are less than honorable, but ultimately understandable.

This is the kind of childish person who, when losing, flips over the board and yells insults at his family, rather than learning from the loss so that he can get better and be in a stronger position to win the next time.

This man is a brat whose money has stunted his maturation.

He shouldn’t be ushered into the White House; he should be laughed into hiding. His querulous nature shouldn’t be coddled; it should be crushed.

America is in need of a leader, not a puerile, sophomoric sniveler who is too easily baited and grossly ill-behaved.

Go to your gilded room, Donald. The adults need to pick a president.

<CHARLES M. BLOW>