Former Mexican President to Trump: 'I'm Not Going to Pay for That F------ Wall'

— -- Not so fast, Mr. Trump.

Former Mexican president Vicente Fox had strong -– albeit naughty -– words for Donald Trump’s controversial plan to force the Mexican government into paying for a border wall.

“I am not going to pay for that f****** wall,” he told Fusion's Jorge Ramos. “He should pay for it. He’s got the money.”

The GOP front-runner has repeatedly promised to make Mexico pay for a wall along the southern border if elected to the nation’s highest office.

Fox expressed concern at the thought of American Hispanics throwing their support behind Trump -– who carried 45 percent of Nevada’s Hispanic population in the latest Republican caucus –- saying, “I’d like to know who those Hispanics are, because they are followers of a false prophet.”

“He’s going to take them to the desert, and if they think that they will benefit with an administration led by Donald Trump, they’re wrong,” Fox said, before pleading; “Please, you Hispanics in the U.S., open your eyes.”

Fox also called Trump “egocentric” and “a crazy guy.”

Trump responded on Twitter, calling on Fox to apologize for using profanity.

Fox is not the first former Mexican president to condemn Trump’s plan; Former President Felipe Calderon told CNBC in February that Mexico is “not going to pay a single cent for such a stupid wall.”