Simon Burns' reported riposte to Squeaker Bercow's "I'm not happy" - "Which one are you then?" - has more than a hint of the post-hoc put-down than the immediate response. Nevertheless, it formed part of a long string of jokes and humour at Bercow's expense delivered by Cameron to the Lobby. It seems like all good harmless fun, but in reality has a deadly import.
Squeaker Bercow is a constant reminder of Labour's malice and corruption, little better than the disgracefully corrupt and sleazy Gorbals Mick whom he replaced. Our parliament has been poorly served by these last two stunted pygmies of Speakers, nasty corrupt little men who have fouled the dignity of the Speaker's chair. Bercow is no joke - he is poison.
The fact that the Prime Minister feels comfortable in openly taking the piss out of Bercow is far more significant than many imagine. It is unprecedented. It signals a complete breakdown in confidence, and this means only one thing - Bercow must either do the only honourable thing in his life and go, or cling on with his pudgy little paws to the armrests just pretending to exercise an authority that few MPs recognise in reality.