National Review Editor and Fox News Contributor Rich Lowry said GOP presidential candidate Carly Fiorina cut GOP frontrunner Donald Trump’s “balls off with the precision of a surgeon” on a primetime national television broadcast, referencing Fiorina’s performance in the second GOP primary debate.

“What did you just say?” host Megyn Kelly responded. “You can’t say that,” as she laughed at Lowry’s statement.

Lowry’s attack against Trump took place during Fox News’ The Kelly File on the same day Trump announced he wouldn’t be appearing on Fox News anymore since the “Fair and Balanced” cable network has been reporting unfairly about him.

Trump responded to Lowry’s comment on Twitter, posting, “Incompetent @RichLowry lost it tonight on @FoxNews. He should not be allowed on TV and the FCC should fine him!”

Lowry continued to “lose it” on Twitter responding to Trump:

Lowry has gone after Trump previously, in fact, just yesterday Lowry attacked Trump in an opinion piece titled, “Donald Trump’s Ridiculous Spin, and Incredibly Thin Skin.”

He has previously appeared on The Kelly File and said Trump spoke like an eighth grader.

In Fox News’ post debate poll released Wednesday, Trump was the clear frontrunner with 26 percent and Dr. Ben Carson came in second with 18 percent.