Cher slammed Republican presidential nominee Donald TrumpDonald John TrumpAustralia recognizes West Jerusalem as Israeli capital, won't move embassy Mulvaney will stay on as White House budget chief Trump touts ruling against ObamaCare: ‘Mitch and Nancy’ should pass new health-care law MORE, calling him an "idiot" and likening him to Hitler.

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Introducing Hillary ClintonHillary Diane Rodham ClintonLanny Davis says Nixon had more respect for the Constitution than Trump Clinton commemorates Sandy Hook anniversary: 'No child should have to fear violence' Sanders, Warren meet ahead of potential 2020 bids MORE during a fundraiser in Provincetown, Mass., last weekend, Cher offered an attack of Trump while praising the Democratic presidential nominee.

"I just think he's a f---ing idiot," Cher said, according to a video of her remarks posted on Facebook, first reported by The New York Times.

Cher also blasted Trump's slogan, "Make America Great Again."

“He means we want to make America straight and white,” she said.

“He just says like the weirdest s---,” she said. “And also — I love this — he’s like ‘L-G-B-T ... and Q?’ Like he just learned it, you know?”

She asked the audience if they remembered the 1970s comedy "Fun with Dick and Jane."

“It’s like ‘Racist Fun with Dick and Jane.’ We’re going to build walls,” she said.

The pop singer continued to slam the GOP nominee, going even further to say she wishes he would disappear.

"I just wish he'd fall off the face of the Earth," she said.

During the speech, she also touted Clinton, saying she is "tougher than Chinese algebra." 

“I believe in her so much,” Cher said.

“I know that if he got into office, our world would be the worst place,” Cher said. “I don’t think we could imagine how bad it could get.”

"If breaking news ever happened and he had to go to the podium, we would just all go, 'F---.' "