Late-night host Stephen Colbert said Monday that allegations of an affair with President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE made by adult-film actress Stormy Daniels in a "60 Minutes" interview did not come as a surprise, claiming that "it all felt true."

"The interview covered everything: The president had sex with a porn star, she spanked him with a magazine with his face on it, he didn’t wear a condom, later they watched ‘Shark Week,’ then his lawyer paid her to keep her mouth shut, and now Trump’s suing this porn star for $20 million," Colbert said on CBS's "The Late Show."

"It's an insane, salacious tale about a sitting president, and the least surprising story I have ever heard," he quipped.

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Colbert's comments came a day after Daniels, whose real name is Stephanie Clifford, described the purported relationship — and efforts to silence her — in detail. Included in that interview was the claim by Daniels that she was once physically threatened to keep quiet about her alleged affair with Trump.

Colbert also seized on Daniels's allegation that she once spanked Trump with a magazine and that he began acting more appropriately after she had done so.

"A couple of spanks and Donald Trump started acting more appropriate. John Kelly John Francis KellyMORE, you know what to do," Colbert joked, referring to the White House chief of staff.

The scandal surrounding Trump's alleged relationship with Daniels burst into the open in January after The Wall Street Journal reported that the president's personal lawyer, Michael Cohen, had paid the porn star $130,000 weeks before the 2016 presidential election.

Daniels and her lawyer have argued that the payment was part of a nondisclosure agreement barring her from speaking publicly about the alleged affair with Trump. Cohen has acknowledged making the payment, but has insisted that it came from his own funds and that Trump was not aware of the transaction.

The White House has denied that Trump ever had an affair with Daniels, who is suing to void the nondisclosure agreement. Trump's lawyers, however, have argued in court papers that Daniels had repeatedly violated the agreement, and could be exposed to millions of dollars in damages.

Updated at 8:18 a.m.