Nancy Pelosi on Thursday trashed President Trump’s State of the Union address Tuesday as “a reality show” — and defended ripping up a copy of his speech when he finished.

“I did not. I tore up a manifesto of mistruths. I don’t need any lessons from anybody, especially the president of the United States, about dignity,” Pelosi said, asked in her first press conference since Tuesday’s address whether she’d stepped over a line of decorum.

“I started to think there has to be something that clearly indicates to the American people that this is not the truth and he has shredded the truth in his speech, shredding the Constitution in his comments, [so] I shredded the address,” she said, adding that it had nothing to do with Trump’s apparent refusal to shake her hand before the speech began.

“This week we had the State of the Union as required by the Constitution. What happened instead was a president using the Congress of the United States as a backdrop for a reality show that had no contact with reality whatsoever,” Pelosi added, referring to the unorthodox format of the president’s speech, which included the surprise reunion of a soldier with his wife, a fourth-grader finding out in real time from the president that she got a school-choice scholarship, and cancer-stricken talk show host Rush Limbaugh being awarded the Medal of Freedom.

As Pelosi spoke, White House spokeswoman Stephanie Grisham punched back in real time on Twitter.

“It’s bad enough that @SpeakerPelosi tore up a speech that honored American heroes & laid out a positive plan for the country…she’s now comparing remarks about our great nation & it’s many success stories to a reality TV show? The dems really don’t know when to stop. It’s sad,” Grisham wrote.

Grisham said earlier Thursday that Trump in his remarks on his acquittal, scheduled for noon, might call for payback against his political enemies.

“He is going to be honest, going to speak with honesty and I think with a little bit of humility that he and the family went through a lot … But I think he’s also going to talk about just how horribly he was treated and, you know, that maybe people should pay for that,” she told Fox News.

Pelosi retorted during her briefing that Grisham’s comment was reminiscent of Trump saying that there were “many fine people … on both sides” after the deadly white nationalists rally in Charlottesville, Va., in August 2017.

“They are giving people encouragement to do things. Just like Charlottesville … I don’t even want to go into the targets because I am one of them,” she said at her weekly press conference on Capitol Hill.

Pelosi also claimed that the commander-in-chief lied about health care, prescription drug prices and the state of the economy he inherited during his speech.

Trump, she argued, said he would always protect people with pre-existing conditions, when in fact he was fighting in court to kill the Affordable Care Act, which ensures that those people can get health insurance.

“We are fighting him in the courts to preserve that benefit. That misrepresentation was appalling and so clearly untrue,” she said.

Trump also vowed to sign a bill to lower prescription drug prices, and urged Congress to send him a bill, which he said he would sign. Pelosi said the House had passed just such a bill but that it’s stalled in the GOP-led Senate.

And she slammed Trump for misrepresenting the state of the economy under President Barack Obama before he took office.

“When President Obama came into office, the unemployment rate was 10 percent. When he left, it was 5 percent. Donald Trump … inherited a momentous job creation,” she said, adding that Obama had cut the deficit, while it has soared in Trump’s first term.

“During eight years of Obama’s presidency, he reduced the deficit by $1 trillion. Instead this administration is increasing and with their tax cuts, tax scam, the benefits are going to the top 1 percent. They increased the national debt by $2 trillion,” she continued, calling the address “a manifesto of mistruths [and] falsehoods” that were “dangerous to the well-being of the American people.”

She also said the House would continue its oversight role of the administration — without offering specifics — despite Trump’s acquittal by the Senate on a nearly party-line vote.

Earlier, Trump took a shot at Pelosi, saying at the National Prayer Breakfast that he doesn’t like people who he claimed lied about praying for him.

“I don’t like people who use their faith as justification for doing what they know is wrong, nor do I like people who say ‘I pray for you’ when they know that’s not so,” Trump said.

Pelosi had said she prayed for Trump, and he fumed about the claim before.

But the speaker, a devout Catholic, once said she asked her pastor why the president’s behavior didn’t change despite her prayers, and that the pastor told her that perhaps she wasn’t praying hard enough.

At her briefing, she responded again, asserting that “he really needs our prayers … and I do pray for him.”

“I don’t know if the president understands that prayer of people who do pray but we do pray for the United States of America.”