This refers to the prospect of Trump winning and pulling off a victory as shocking as the vote to leave the EU - something the Republican candidate himself has repeatedly encouraged.
But the Ukip leader was quickly reminded that America’s “British Exit” was in 1776, when the colonies declared their independence from Britain and went on to fight a war to kick the British out.
“We literally Brexited 250 years ago,” one tweeter told Farage.
Others just laughed at the prospect of a “Brexit Day” in light of the last four months of British politics.
Farage has steadily warmed to Trump. He initially said he would vote for him over Hillary Clinton “with a gun against my head” but has travelled to the US to speak alongside him to talk about Brexit in August.
As HuffPost has noted before, the comparisons with Brexit are overstated.
The polling in the UK more or less predicted Brexit while Trump has trailed Clinton in national polling in the US.
Here are five other reasons the two are different.