Well, having re-read what I wrote last September and having read some of the subsequent posts I realise that I was, perhaps, being a little dogmatic.
In the end, as we all know, humour is a subjective thing and if you don't find something funny you just don't. End of story.
And, of course, every act in the world is capable of having an 'off night' and falling flat on its face.
All I can say is that Bonzo and Doris at MFAB all those years ago were hilarious and just the memory of it all still makes me laugh.