Former Trump campaign adviser Sam Nunberg went on a rant Monday, calling White House press secretary Sarah Huckabee Sanders a “fat slob.”

Nunberg took umbrage that Sanders dismissed Nunberg as having a “lack of knowledge” about the inner workings of the White House.

“She’s a joke. Okay fine, yeah, she’s unattractive, she’s a fat slob. But that’s irrelevant. The person she works for has a 30 percent approval rating,” Nunberg told NY1 in an interview, one of several he conducted with media outlets Monday.

“So if she wants to start attacking me, she can do that. That’s fine. But we know it’s a joke. Everyone knows it’s a joke that she’s working there.”

Republican critics slammed Nunberg’s remarks as beyond the pale.

“You can’t think of anything more intelligent to say?” said former New York Lt. Gov. Betsy McCaughey.

“It reflects poorly on the person who makes the personal accusation,” she said. “Sarah is one tough cookie. She’s a competent woman. I have enormous respect for her.”

Nunberg and Trump have a rocky history. Trump twice fired Nunberg during the 2016 campaign.