Kris Jenner Reveals Her Most Embarrassing Moment With Caitlyn Jenner, and It's a Doozy

Keeping Up With the Kardashians star reveals intimate secret from her marriage

Embarrassing moments—you can't live with them; you can't live without them.

Sure, whenever we become embarrassed it's awful at the time, but it's those moments that make up some of our greatest memories, even if it means shriveling up into a ball. Throughout Kris Jenner and Caitlyn Jenner's marriage, they probably experienced a couple of these, but in the November issue of Cosmopolitan, the momager opens up about the most embarrassing moment for her and her now-ex.

"The most embarrassing moment for me was when I was with Bruce on a commercial airliner in first class. We joined the mile-high club and we felt we got away with it," Kris reveals in a behind-the-scenes clip from the magazine shoot.

(Kris' comments refer to her former spouse in a time before she chose to live publicly as Caitlyn. In stories published after her Vanity Fair cover, she has been referred to as Caitlyn and female pronouns have been used.)

Key word being "felt."

"We had sex in the bathroom and we came out and nobody said anything. At the end of the flight, the flight attendant got on the microphone. 'Congratulations, Mr. and Mrs. Jenner! You've just joined the mile-high club. We're so proud of you, and we decided to give you a bottle of champagne! Yay!'

"I could not squish down in my seat low enough," she adds. "I was mortified."

While this anecdote will probably surprise many (do the Kardashians ever fail to shock?), it's the cover of the magazine that has people freaking out. No, it's not the fact that all of the Kardashian and Jenner women are featured—the first time since 2011!—it's that the magazine referred to them as "America's First Family."

Many readers did not appreciate the comparison to the Obama family, so they took to social media to slam the magazine. But the women seem to be brushing it off, focusing instead to celebrate their family unit. In fact, Kris told E! News exclusively that she and her family have gotten over the Vanity Fair drama that was featured on the season finale of I Am Cait.

"Obviously, I was angry!" she said, referring to the famous cover. "But we are all good now and have moved past it."

Be sure to tune-in to an all-new episode of Keeping Up With the Kardashians Sunday at 8 p.m. only on E!.