O.J. Simpson allegedly once bragged about having sex with Kris Jenner in a hot tub while they were both married to other people.

The claim, which came from Simpson's former manager Norman Pardo, resurfaced Thursday after the former NFL star died Wednesday at age 76 following a battle with prostate cancer and as rumors that Simpson was Khloé Kardashian's biological father continue to swirl.

Pardo claimed in the 2019 documentary "Who Killed Nicole?" that Simpson allegedly once told him he had a tryst with Jenner in a jacuzzi one night while vacationing together with their respective families in the early 1990s.

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At the time, Jenner was still married to Robert Kardashian, and they were close friends with Simpson and his then-wife, Nicole Brown Simpson.

"OJ said he stood up, pulled his shorts down and, I'll give you exactly what he said: 'Her eyes bugged out of her head and ... I f**ked that B until I broke her,'" Pardo claimed in a clip from the doc obtained by Page Six.

Pardo, who said he managed Simpson from 1999 to 2012, alleged that Robert and Nicole had gone to bed early that night, leaving their spouses alone.

"That was as messed up as you can possibly get," Pardo claimed, adding that the alleged affair ruined their marriages and friendships.

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Kris and Robert divorced in 1991, while OJ and Nicole ended their marriage in 1992.

Two years later, Brown Simpson and her friend Ronald Goldman were found stabbed to death.

Simpson was accused of murdering his ex-wife and her friend but was ultimately acquitted in 1995.

Robert gained recognition at the time as Simpson's defense attorney in his televised murder trial.

Years after Robert's passing in 2003, Jenner admitted to having a months-long affair with soccer player Todd Waterman in 1989, according to the Los Angeles Times.

"I constantly lied to Robert," Jenner wrote in her 2011 memoir. "I could not control myself."

The Kardashian family matriarch confessed that the affair led to her split with the lawyer.

She went on to marry Caitlyn Jenner, while Robert tied the knot with Jan Ashley.

Kris Jenner

(Photo : Theo Wargo/Getty Images)

A year after Kris' memoir was released, Ashley reportedly said in an interview with Star that Robert allegedly told her Khloé was not his biological daughter.

This sparked the long-standing conspiracy theory that Simpson was Khloé's real father -- a claim that both the former NFL player and Kris have denied.

In a 2019 episode of "Keeping Up With the Kardashians," Jenner slammed the rumor as a "pathetic" and "disgusting" lie.

"After 25 years, you'd think it just wouldn't be a thing," Jenner said in the episode. "It's just lie after lie after lie after lie, and it's only so much that one human being can take."

Simpson also shut down the speculation that he secretly dated Kris during an appearance on the podcast "Full Send" in 2022.

"People have their types, right? I always thought Kris was a cute girl," Simpson said. "She was really nice. But I was dating supermodels."

He also dubbed the Khloé speculation as a "rumor" that is "not even anywhere close to being true."