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Nigel Farage was brutally trolled during a speech about Donald Trump today by a Labour MEP.

London MEP Seb Dance switched seats to sit right behind Farage during a speech to the European Parliament in Brussels - and held up a little sign telling viewers "he's lying to you."

The hilarious moment came as Farage barked out a speech accusing the EU being of “anti-American” and “anti-democratic zealots”.

Ukip’s ex-leader claimed: "Trump is motivated by protecting the USA from Islamic terrorism.

"All Donald Trump has done is taken 7 countries that were identified by President Obama as posing a risk to the USA."

He also clashed with the debate’s chair after he bellowed: "I can see you’re all very upset and I’ve no doubt the events of the US are a profound shock.

“Someone has stood on a manifesto for election, got into office, and within one week said he will hold faith with his own electorate.

"It’s called democracy!”

When the chair told him to be respectful he moaned: "I’ll be respectful all right. Perhaps you will be too for the right of a leader of a political party who won the elections for the European Parliament in 2014."

Fellow MEPs looked on in bemusement at Mr Dance's one-man protest - with the exception of Ukip MEP Roger Helmer, who sat stoney faced throughout.

Eventually, a parliamentary clerk in a tuxedo and white tie, came over and had a word - and Mr Dance's protest ended peacefully.

Ukip MEP Bill Etheridge filed an official complaint to the European Parliament about the protest - complaining officials “failed to remove him until the end of the speech and the matter it [sic] was not treated with sufficient seriousness by the acting chair.”

Nigel Farage is notorious for hurling insults in the Parliamentary chamber.

He famously attacked EU President Herman Van Rompuy, saying he had “all the charisma of a damp rag and the appearance of a low grade bank clerk.”

And in an embarrassing follow up, Farage tweeted highlights of his speech - during which the sign is visible towards the end - along with the comment: "These guys have a problem with the truth".