Boris Johnson’s career only makes sense once you’ve worked out it is a kind of bull****-themed escape room. Find the lie that opens the door and takes you to the next level, then the next one, then the next one, and once each has closed behind you there’s not a thing the truth can do about it (at least for now).

It is why, for example, during the Tory leadership contest, whenever he was asked what his actual Brexit strategy was, he would, every single time, offer words very much along the lines of: you disaggregate the elements of the otherwise defunct withdrawal agreement. You keep the parts on which there is agreement, and you get rid of the parts you do not.

Absolute filth. Obviously. Complete garbage. But lo! He’s prime minister now, he’s off on his first foreign trips and what do you know?

Angela Merkel tells him the withdrawal agreement isn’t going to be reopened. She tells him to go and find an alternative to the backstop "within 30 days" and if he does, the backstop doesn't have to be used.

Johnson and his shamefully large army of media sycophants herald this great breakthrough. As if finding an alternative to the backstop hasn't always been the entire purpose of the backstop. Nothing, absolutely nothing, has changed.

And now, in Paris, in the sunny courtyard of the Elysee Palace, Emmanuel Macron has told him that the backstop is “indispensable ... to preserve the integrity of the single market, which is the foundation of the European project”.

Biggest lies told by Boris Johnson Show all 5 1 /5 Biggest lies told by Boris Johnson Biggest lies told by Boris Johnson Made-up quote for The Times Johnson was sacked from The Times newspaper in the late 1980s after he fabricated a quote from his godfather, the historian Colin Lucas, for a front-page article about the discovery of Edward II’s Rose Palace. “The trouble was that somewhere in my copy I managed to attribute to Colin the view that Edward II and Piers Gaveston would have been cavorting together in the Rose Palace,” he claimed. Alas, Gaveston was executed 13 years before the palace was built. “It was very nasty,” Mr Johnson added, before attempting to downplay it as nothing more than a schoolboy blunder. PA Biggest lies told by Boris Johnson Sacked from cabinet over cheating lie Michael Howard gave Boris Johnson two new jobs after becoming leader of the Conservatives in 2003 – party vice-chairman and shadow arts minister. He was sacked from both positions in November 2004 after assuring Mr Howard that tabloid reports of his affair with Spectator columnist Petronella Wyatt were false and an “inverted pyramid of piffle”. When the story was found to be true, he refused to resign. PA Biggest lies told by Boris Johnson Broken promise to boss In 1999 Johnson was offered editorship of The Spectator by owner Conrad Black on the condition that he would not stand as an MP while in the post. In 2001 he stood - and was elected - MP for Henley, though Black did allow him to continue as editor despite calling "ineffably duplicitous" PA Biggest lies told by Boris Johnson Misrepresenting the people of Liverpool As editor of The Spectator, he was forced to apologise for an article in the magazine which blamed drunken Liverpool fans for the 1989 Hillsborough disaster and suggested that the people of the city were wallowing in their victim status. “Anyone, journalist or politician, should say sorry to the people of Liverpool – as I do – for misrepresenting what happened at Hillsborough,” he said. PA Biggest lies told by Boris Johnson ‘I didn’t say anything about Turkey’ Johnson claimed in January, that he did not mention Turkey during the EU referendum campaign. In fact, he co-signed a letter stating that “the only way to avoid having common borders with Turkey is to vote Leave and take back control”. The Vote Leave campaign also produced a poster reading: “Turkey (population 76 million) is joining the EU”

Of course he has. As he was always going to. But that doesn’t matter any more. Because our prime minister can glance up at the sky, do a little smirk, and move straight on to the next lie, the one that he thinks will allow him to shift the blame for his own failures on the European Union in the general election for which planning is already well under way.

Because when no deal is reached, and the border between Northern Ireland and the Republic of Ireland can no longer be kept open, Johnson wants the European Union, and more accurately the UK public to know that, “under no circumstances will the UK be instituting, imposing, checks or controls of any kind at that border.”

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The hard border, will, he says, be the European Union’s fault. For now, he knows, it doesn’t matter that his own government’s analysis, as leaked to The Sunday Times, calls that position “unsustainable". It doesn’t matter that, for example, a German MEP called Elmar Brok has been on UK television several times in the last 24 hours to explain why that position is so obviously drivel.

The UK’s only strategy to save itself is to do super high-speed trade deals with anyone that will have us. Still, no country or trade bloc, certainly not the United States, and certainly not the European Union, is going to do a trade deal with a country that it thinks – rightly or wrongly – cannot guarantee standards on products coming in and out of its customs territory.

But that is the lie that allows him to escape today, and into tomorrow, where new ones can be found. And this one can just join the rest, to be exposed at a more convenient time, when it will all be too late.