Jonathan Cheban made it very clear Wednesday that it's not cool to trash talk his BFF Kim Kardashian.

Kim Kardashian's Paper Magazine Shoot Leads To Funny Memes

After Kardashian posted a photo from her risqué Paper Magazine shoot on Instagram Tuesday, Glee actress Naya Rivera commented with, "I normally don't. But...you're someone's mother..."

While the reality star didn't respond, her longtime best friend had a lot to say and even accused Rivera of mimicking Kardashian.

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"After a year-long tour of impersonating Kim, she decided to come out of her shell and make a real statement about Kim's Paper cover (which has to be one of the hottest, if not the hottest cover all year)," Cheban wrote on his blog The Dishh.

"As expected, she's getting some press and when all else fails, use Kim. I'm personally disgusted that after badgering Kim all year and trying to hang out and do business together, she goes and tries to make a statement like this. Yes, Kim is a mother, BUT WHO CARES... have you ever heard of a MILF?!"

He also shared photos of Rivera and Kardashian side-to-side to support his opinion that the former attempts to imitate his friend's style. The post's headline - "I (We) Don't F*ck With You... Naya! Lyrics By Big Sean!!" - was also a major jab, referencing Rivera's ex-fiance, with whom she broke up with earlier this year.

"We all know you want to be Kim, but you don't got it boo, and the only cover you will be gracing is the Single White Female 2 straight to DVD box set," Cheban concluded.