Former Mexican President Vicente Fox shot back at those in the Mexican government who believe they can work with Donald Trump if he becomes the next president of the United States, labeling him a "crazy guy."

Fox told Vice News in an interview that President Enrique Pena Nieto made a mistake by saying he would be "absolutely respectful" of the next president, whether it's Trump or former Secretary of State Hillary Clinton. He also went on to compare Trump to the likes of former Cuban dictator Fidel Castro and Venezuelan President Hugo Chavez.

"I didn't like the very last public statement of the Mexican government saying that either or whoever is the candidate that we will work with [them]," Fox said. "I don't accept that. You cannot work with a crazy guy."

"I said it when I had problems with Fidel Castro. I said, 'Go home — you eat and you go,' or I did it with Hugo Chavez," he said. "I cannot accept in terms of good behavior or political correctness to accept to have as my neighbor country's president a crazy guy."

The former Mexican president proclaimed how thankful he is that former Secretary of State Hillary Clinton is leading in the polls, adding that, "I guess the fish is dying by the mouth."

Earlier in the campaign, Fox made waves when he twice declared that Mexico would not "pay for that f——-g wall."

As for the current president, Pena Nieto made his remarks Tuesday, adding that he would like to meet with Trump.

"I can't agree with some of things he has said, but I will be absolutely respectful and will seek to work with whomever becomes the next president of the United States," Pena Nieto said.