The emergency session of the European Parliament proved to be a turbulent event for Nigel Farage, who was heckled, booed and barracked.
Jean Claude Juncker was the first to clash with Farage as they began to discuss the fallout of the Brexit vote.
"Why are you here?" the European Commission president demanded to know as he opened his speech with the Ukip leader and fellow eurosceptic MEPs sat at an adjacent desk ostentatiously sporting a Union Jack tie.
"That's the last time you are applauding here," Juncker said after the fiercely anti-EU politician applauded his opening statement that Europe "must respect British democracy and the way it has expressed its view".
"To some extent I am really surprised that you are here," he told him.
"You were fighting for the exit, the British people voted in favour of the exit. Why are you here?"
Soon it was Farage's turn to address the European Parliament and he boldly goaded fellow MEPs "you're not laughing now" as he was was welcomed with boos.
The Ukip leader accused them of being "in denial" about the euro crisis, immigration and the imposition "by stealth, by deception, without ever telling the truth" of a political union.
Offering a tongue in cheek "thank you for the warm welcome", he told them: "When I came here 17 years ago and said I wanted to lead a campaign to get Britain to leave the European Union you all laughed at me.
"Well I have to say you're not laughing now are you?"
Farage declared: "The reason you are so upset, the reason you are so angry, has been perfectly clear from all the angry exchanges this morning: you are in denial.
"You are in denial that your currency is failing," he said.
As the session was disrupted by constant shouts of dissent, Parliament president Martin Schulz was forced to intervene, warning members that "one major quality of democracy is that you listen to those even if you don't share their opinion".