Carly Fiorina compares Donald Trump's mouth to Kim Kardashian's 'you-know-what'

Republican presidential candidate Carly Fiorina went slightly more in-depth Thursday to explain what's become a frequently used comparison - GOP front-runner Donald Trump and "Keeping Up with the Kardashians" star Kim Kardashian.

At a campaign event Thursday in Charleston, South Carolina, Fiorina said Trump's "big" mouth was similar to a Kardashian's big "you-know-what," drawing a burst of laughter from the crowd.

"You know, Donald Trump is the Kim Kardashian of politics," she said. "He has a big mouth. She has a big 'you-know-what.' And they're both famous for being famous, and the media plays along."

Fiorina first made the comparison on Twitter last week and recently rehashed it in a meeting with the Des Moines Register.

The two Republican rivals have feuded on and off since early in the campaign season. Most notably, Trump appeared to take a shot at Fiorina's looks in a September interview with Rolling Stone.  

Watch Fiorina make the comparison below: