When someone says something the Failing President of the United States disputes, he tries to discredit the speaker by reviving an issue from his or her past – even if it has nothing to do with the topic under discussion.

He’s done it a few times now with Connecticut Sen. Richard Blumenthal, always harping on the same episode from 2010 – which makes me think Blumenthal must be a pretty straight arrow. And not surprisingly, Chicken Liar enhances the story with his own bizarro alternate reality.

The lies are wildly off the mark and not worth repeating, but the truth is that Blumenthal said during his first senatorial campaign he had served “in” Vietnam when he intended to say he had served in uniform “during” the Vietnam war. Which is true – Blumenthal spent six years in the Marine Corps Reserve and attained the rank of sergeant.

The failing president has employed the same tactic with Massachusetts Sen. Elizabeth Warren, referring to her as “Pocahontas” because he claims she’s lying about her Native American ancestry.

Of course these instances are mere pebbles compared to the heaven-scratching tower of lies constructed by the current occupant of the Oval Office. In fact, I imagine this same tactic could be turned right around on Chicken Liar himself.

But then one would be faced with the daunting task of selecting just one singular lie to symbolize the ever-growing list this guy has compiled just over the past couple of years.

One of my favorites is the one where he claimed “thousands and thousands” of Muslims danced on New Jersey rooftops to celebrate the 9/11 attacks. He stuck to the delusional claim even as he failed to provide a single snapshot of evidence to support what every rational human being knew to be a lie – or at least a hallucination.

This was the moment I first realized the candidate wasn’t merely a clown but rather a seriously mentally unhinged whackjob. He then proceeded to substantiate this impression time and time again.

Or one could dust off the lie he told George Stephanopoulos back during the GOP primary about “starting with very little” before building up his billion-dollar company. This nugget is representative of Chicken Liar’s self-portrayal as some sort of Lincolnesque self-made man, which is comical.

This guy doesn’t know what it means not to be rich. His father was a New York City real-estate tycoon and so the son grew up to become a New York City real-estate tycoon, taking over a family business started by his grandmother in the 1920s.

“If he hadn’t inherited $200 million dollars you know where he’d be right now? Selling watches in Manhattan,” Marco Rubio retorted during a 2016 debate.

Rubio himself is the son of a bartender and a hotel maid. Elizabeth Warren’s father was a department store janitor, and their family car was repossessed when they were unable to keep up with payments. These are people who started with “very little.”

Another favorite is the failing president’s promise to release his income tax returns once they are no longer under audit. After he was sworn into office, however, advisor Kellyanne Conway said there was no longer a need to release the returns.

“We litigated this all through the election,” she said. “People didn’t care.”

Well, one could argue voters actually believed the candidate (Lord knows why) when he pledged to release his returns at some point. Now it’s clear there was no such intention – if he had lost as he himself expected, there would have been no reason to put the information out. Once he won, he contended there was no longer any point.

But a record 1.1 million people have signed a petition posted on the White House website demanding the release of his tax returns, “including any pertinent documentation which can reveal the foreign influences and financial interests” representing possible conflicting interests.

It’s worth noting that the failed casino owner previously had no problem releasing tax returns under audit, but back then there was a compelling reason to do so – he needed casino licenses.

Perhaps an even bigger lie is this notion he’s some kind of tough guy.

I know John Kerry’s a tough guy because when someone fired a grenade launcher at his Swift boat crew in Vietnam, Kerry rammed the craft onto a bank, jumped out, and chased the guy down with a machine gun.

I know John McCain’s a tough guy because he spent five and a half years as a POW in Vietnam and came home broken in body but indomitable in spirit.

Chicken Liar plays a tough guy on TV. It’s becoming more clear every week this draft dodger emulates tough guys he’s seen on TV because he has no other formulative context. He’s the guy who was born on third base and brags about hitting a triple. He’s what former Defense Secretary William Cohen calls “TV tough.”

But as even his supporters are starting to realize, our failing president is all talk. While Teddy Roosevelt’s credo was to speak softly and carry a big stick, this guy’s approach is to whine pathetically and wave his tiny hands in the air.

He once created a bogus veterans event to avoid a TV showdown with news host Megyn Kelly. Just this week, in true “thank you sir, may I have another” fashion, he thanked Vladimir Putin for booting American diplomats out of Russia.

Maybe there’s a link between his servile attitude towards Russia and the tax returns he’s hiding, and at some point we’ll get to the truth of that.

But when you consider it’s getting harder each week to believe anything coming out of this guy’s mouth, he’s the last who should be dredging up the history of others.