Donald Trump was recently accused by multiple women of walking into the backstage of a teen beauty pageant he ran in 1997 while some of the contestants were naked. Trump insisted it never happened — describing those accusations and the sexual assault allegations against him as "lies, lies, no witnesses, no nothing, all big lies."

"Okay. Lies. All lies, he says," Late Show host Stephen Colbert said on his show Monday night. "Was there anyone — anyone at all — backstage at this pageant who could corroborate her story?"

Colbert then rolled 2005 audio of Trump on The Howard Stern Show:

I’ll go backstage before a show, and everyone’s getting dressed and everything else. And I’m allowed to go in because I'm the owner of the pageant, and therefore I’m inspecting it. … They’re standing there with no clothes. Is everybody okay? And you see these incredible looking women. And so I sort of get away with things like that.

Oh.

"Folks, folks, folks, what are you going to do?" Colbert asked. "It’s a classic case of she said, he said ‘hell yeah.’"

It seems, though, that a lot of people are taking Trump’s own words — including the "grab ’em by the pussy" tape — and the allegations against him seriously. Trump is now down 7 points to Hillary Clinton in the RealClearPolitics polling average, compared to a 1-point gap a month ago.

Trump, however, has come up with several conspiracy theories to explain his fall:

He has claimed the election is rigged.

He suggested Hillary Clinton used performance-enhancing drugs at the debate.

He argued that there is an international globalist conspiracy against him.

Colbert finished the segment by drawing a diagram that puts together all of these conspiracy theories. It ends with a bit of a surprise, so make sure to watch the clip above.

Watch: This election isn't just Democrat vs. Republican. It's normal vs. abnormal.