Funny the thing that finally stuck to Boris Johnson after all these years is The Great British "Oi, So You Think You're Better Than Us?"
Considering that's exactly what he has always thought and has never made any effort to hide beyond mussing his hair.
None of the lies, the malfeasance, the self-dealing, the corrupt cronyism... only, finally, a particularly naked instance of "I am actually better than you" conduct that was blatant and symbolic enough to strike home.