Story highlights Former Mexican President Vicente Fox is having a public feud with Donald Trump

Fox said during a live interview with Maria Bartiromo on Fox Business Network on Friday morning

(CNN) Former Mexican President Vicente Fox really doesn't like Donald Trump's proposed border wall.

"I have to say that we are not, I am not going to pay for that f***ing wall," Fox said during a live interview with Maria Bartiromo on Fox Business Network on Friday morning, repeating the phrase that made waves when he used it a day earlier.

This time however, the expletive went uncensored as a visibly stunned Bartiromo gasped.

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