It has been effectively argued by some that since around 2015-2016 many Americans, particularly in the media and politics, have suffered from a mental health condition known as "Trump Derangement Syndrome" marked by an obsessive and emotion-driven hatred of all things associated with former President Donald Trump.

Chief among TDS sufferers would be late-night "comedian" Stephen Colbert, who displayed his affliction on Monday by devoting the near entirety of his opening monologue to celebrating Trump's guilty verdict in his New York criminal trial, according to The New York Times.

Of particular note for the Times reporter -- who also likely suffers from TDS, if she found Colbert's bit funny -- was an advent calendar the host created to help count down the days until Trump's sentencing hearing on July 11.

The "Countdown to Sentencing Advent Calendar"

During his nearly 12-minute opening monologue on Monday's episode of CBS' "Late Show," host Colbert made it a point to work "convicted felon" or some variation thereof into almost every reference to former President Trump.

At one point, he joked about how Trump "could be in prison" when he accepts the GOP nomination, given that the Republican National Convention is scheduled to be held four days after the presumptive nominee's sentencing hearing, and said, "It’s going to be the RNC live from Cell Block B with a keynote speech from his warden, his cellmate Spider, that one guard who smuggles in cellphones up his butt, and, for the cocktail hour, enjoy complimentary toilet wine."

Colbert then lamented that it was "38 days" from then until the sentencing hearing and, to "help pass the time," rolled out a "Countdown to Sentencing Advent Calendar" that featured New York Judge Juan Merchan's face on each tiny door, inside of which was revealed to be a large bottle of bourbon and a tumbler glass.

"Lock him up!"

Later in the monologue, according to The Wrap, Colbert took issue with an "insane lie about his 2016 campaign" that Trump told in an interview with "Fox & Friends" over the weekend, during which he asserted that it was his supporters, and not him, who repeatedly started the "Lock her up" chants about his Democratic rival Hillary Clinton.

"The people said, 'lock her up?' That was your whole campaign. Stop it. We remember, we were there. It’s like if Arby’s said 'We never said we have the meats, the people said we have the meats.' Also, if you didn’t say, then who’s this dingus?" Colbert said as he played a brief clip of different cuts of Trump saying the phrase himself.

The CBS host then played another clip from the recent interview of Trump claiming that "it would be tough for the public to take" him being imprisoned, to which Colbert smirked and said, "It would be tough for the public? Actually, I happen to have a large number of the public here. Hey public, what do you all think of Trump going to jail?"

His audience of fellow TDS-sufferers cheered maniacally and launched into their own chant of "Lock him up," to which Colbert joked, "There you have it. I didn’t say, lock him up. The people said, lock him up."

TDS is real but not officially recognized ... yet

To be sure, "Trump Derangement Syndrome" is not a formally recognized mental condition listed in the American Psychiatric Association's DSM-5 textbook of mental illnesses, according to a Psychology Today article in 2019, though it is considered by some to be informally included in the "folk categories" of real but unrecognized and undiagnosed conditions.

TDS is characterized by some as the "notion that the everyday activities of President Trump trigger some people into distorted opinions, extreme emotions and hysterical behaviors." Interestingly enough, there was a reported proposal in 2020 to add TDS to the DSM-5 textbook that included a list of eight symptoms, of which any combination of three or more would indicate an affliction of the severe anti-Trump condition.

Those highly recognizable symptoms included: "Identity disruption (e.g., feeling as though part of oneself has died); Marked sense of disbelief about Donald Trump; Avoidance of reminders that Donald Trump is President; Intense emotional pain (e.g., anger, bitterness, sorrow) related to Donald Trump; Difficulty moving on with life (e.g., problems engaging with friends, pursuing interests, planning for the future); Emotional numbness; Feeling that life is meaningless; and Intense loneliness (i.e., feeling alone or detached from others)."