Ossification: – a tendency toward or state of being molded into a rigid, conventional, sterile, or unimaginative condition
– Adrian Monck – 7 Thin.gs NewsletterThe crisis of the West isn’t immigration. It’s immobility.
And that is the real story.
Politicians talk endlessly about who’s coming in. No one talks about who can’t leave.
Reading: There is a crisis of immobility in the United Kingdom

The reference made in the cartoon is well ossified itself
https://en.wikipedia.org/wiki/Class_sketch
You can watch the whole original joke from The Frost report of 1966 here
https://metro.co.uk/video/ronnie-corbett-s-classic-class-sketch-1278885/?ito=vjs-link
