The broadcaster jabbed back at the President of the European Commission in French, blasting “jusqu’à la vôtre mon amie”, which translates to “up yours, my friend”.
It comes after the politician said the English language is “losing importance” within Europe following Britain’s decision to leave during a speech in Florence.
Speaking during his monologue on Sky News’ The Pledge, Ferrari said Mr Juncker would be “cutting off your nose to spite your face” if he wanted everyone to speak in French.
He said: “That might get a guffaw from a room full of Brussels bureaucrats Monsieur Juncker but you’d be a fool to turn your back on our mother tongue just to score a cheap point.
“English is the international language of business, of civil aviation and is vital for trading with emerging markets such as India, so try and force all your friends to speak Français if you like Jean-Claude but you’d be cutting off your nose to spite your face.
“English has been spoken for more than a thousand years and it still will be long after you’ve enjoyed your last late night brandy.
“But since you insist on speaking French, for now, Monsieur le Président, here’s something you will understand – Jusqu’à la vôtre mon amie [up yours, my friend].”
The fiery rant comes after the EU Commission chief was loudly applauded as he said he would deliver his remarks in French instead of English.
He was cheered by the audience as he laid into Britain over the Brexit vote before beginning his keynote address to a State of the Union conference in the Italian city.
The EU Commission chief began his speech by pointing out almost nobody speaks his native Luxembourgish, before saying: “I agitated between English and French but I will express myself in French.”
When the pro-EU audience erupted in loud applause, he continued that “slowly but surely English is losing importance in Europe”, prompting another deafening ovation.