It's just the comedy of the whole thing, you couldn't write that sketch if you tried, it says so much, the way Clegg just stands there like a lemon not saying anything 
The surgeon has no respect for Cameron's so called power, he is in the surgeons territory and is going to jolly well say what he likes, how he likes.
Then on their way out, the surgeons pa lady trying to de fluster him and that strange man just standing watching in his PJ's ahh!
stillfrazzled I heart him too!