The jaw dropping comments were made during a question and answer session at University College London.
Mr Clegg, 50, also declared that he would continue to be a "Remoaner" and would call for yet another referendum so the public can once again vote on the terms of EU exit.
But in a bizarre outburst the former Liberal Democrat leader hit out at Brexit voters and paid special attention to pensioners who survived heavy air raids carried out over Britain in 1940 and 1941 insisting they will never admit they are "wrong."
Nick Clegg focussed his anger at Brexit supporters and Blitz survivors
The last thing that these nutty Brexiteers will ever do is admit that they have got something wrong
Liberal Democrat Nick Clegg
Mr Clegg gesticulated wildly when he waxed lyrical about the outcome of the Brexit vote and the desire of the majority of the British public to end the relationship with the undemocratic EU.
He fumed: "They are going to go into absolute overdrive. How dare Johnny Foreigner not give us what we want now! And why should we give them a penny? We survived the Blitz, we survived the Blitz!
Mr Clegg addressed a packed audience at University College London
"I know you laugh but I guarantee you the front page stuff will be 'We Survived the Blitz' so it's going to become; the last thing that these nutty Brexiteers will ever do is admit that they have got something wrong, they can't do that.
"So they will have to blame someone else, there is a fine long tradition in British politics that we will blame our friends across the channel…as the clock runs out, it's not going to be in a reasonable climate and so that worries me."
Mr Clegg, who has staunchly defended the EU since the Brexit vote, appeared to justify his lack of involvement in the Remain campaign because he says he was lacking credibility.
And he said he was unable to rally support for the cause he believes in so much because he was not a "great asset."
When asked about his involvement in the referendum he said: "By way of punctilious correction, I didn't actually play and nor did I seek to, and nor do certainly I think it would have been right for me to play a particularly prominent role in the European referendum.
"Oddly enough of all the three it's the one I played the least prominent role in and quite rightly.
Mr Clegg is a great supporter of the unelected undemocratic European Commission
"I didn't think I was the most credible witness having just presided over a crushing defeat and having just been unceremoniously rejected by the British people and I didn't think I would necessarily be a great asset for the referendum."
Most oddly however Mr Clegg also said he found the EU to be shambolic and haphazard during the five years from 1999 to 2004 when he joined the gravy train to become an MEP in Brussels.
And he said he thought the whole concept was "unappealing" when he worked there.
He added: "The point at which, like everything, you start thinking that the way the sausages are made is less attractive than the final product was not in London but when I was in Brussels at the European Commission and then at the European Parliament.
"Any system of Government looks most dignified and seamless from afar, [but] looks most shambolic and looks most haphazard on closer inspection and it wasn't was when I was in Whitehall, far from it.
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"The flaws and the blemishes and the frustrations and the gridlock that can sometimes afflict European decision making, I saw that and like everybody found that unappealing when I was working in Brussels rather than when I was working in Whitehall."
Surrounded by hundreds of students, Mr Clegg also took aim at Theresa May claimed the Conservative government would be "crap" at negotiations on trade, said that she has "over promised" the electorate while at the same time criticising former Chancellor George Osbourne for his fearmongering stance during the referendum campaign.