Confuse a Cat: Happy 40th birthday to Monty Python

Jennie Rigg and The Bureau of Sabotage have already wished Monty Python a happy 40th birthday. I am happy to join them.

This is the first Python sketch I ever saw. It was broadcast on 16 November 1969 at an hour long after nicely brought up nine-year-olds had gone to bed.

But a week or two later someone wrote to Robert Robinson at Junior Points of View saying they had heard about this really funny new comedy show and please, please, please could he show a clip from it?
This is the sketch he showed.