A Scots friend of mine often bites his fingernails. I enquired whether they were bitten to the quick on Saturday, during the Scotland/England game. “Quick?” he replied. “All the way up to the elbow.” A great sporting contest can be cathartic, and the Calcutta Cup match had a further advantage. For several hours, millions of people who had thought about little else for several weeks enjoyed the profound relief of forgetting about Boris Johnson.

Alas, however, the final whistle on that appalling fixture – Boris versus integrity – is still to come. Bojo himself would be well acquainted with the Ciceronian onslaught which ought to be quoted as his coup de grace (the only grace he deserves). “When, O Catiline, do you mean to cease abusing our patience… when is there to be an end of that unbridled audacity of yours, swaggering about as it does now?” For Catiline, read Boris.