Mexico's former President Vicente Fox has been taking on Donald Trump daily

Former Mexican president Vicente Fox is a man on the mission. Despite having left the post nearly a decade ago, this outspoken and profane critic of the new US president is taking Donald Trump down on Twitter every day.

Trump's vow to accelerate construction of a "contiguous, physical wall" along the Mexican border is now almost a Washington reality. When Trump first touted the idea during his presidential campaign, adding that Mexico would pay for it, Fox took him on, saying his country was not paying for "that f#$%ing wall."

Fox had to apologise four months after that tweet, but he is now back attacking Trump in series of tweets. Here's a glimpse

Sean Spicer, I've said this to @realDonaldTrump and now I'll tell you: Mexico is not going to pay for that f****** wall. #FuckingWall

— Vicente Fox Quesada (@VicenteFoxQue) January 25, 2017

go ahead, #trump. This will prove that the system made you win, not the people. Losing by 3+ million votes is not a mistake. https://t.co/0GWJvYcSgv

— Vicente Fox Quesada (@VicenteFoxQue) January 25, 2017

#trump grow up,behave like a president.Stop lying and cheating American https://t.co/ODERldPWI8 know you lost popular vote.

— Vicente Fox Quesada (@VicenteFoxQue) January 25, 2017

#trump,this time you will hear from EPN the proud,firm voice of Mexico about walls,nafta & the dignity of our people both in US $ MX

— Vicente Fox Quesada (@VicenteFoxQue) January 25, 2017

Do not be afraid of Trump, he’s a bully and a bluff, bullies end when they’re called out. America, stand out before it’s too late!!

— Vicente Fox Quesada (@VicenteFoxQue) January 11, 2017

Dearest Donald, you started losing in what you care for the most: rating. That's right! Big mouth, lousy actions and small crowds cheering.

— Vicente Fox Quesada (@VicenteFoxQue) January 21, 2017