That would be like a very important phone and urgent call that I took some years ago on a Friday afternoon to resolve Monday's problem. I knew it would arrive when I was out of the office fully engaged in an important pre-arranged activity.

I had earphones set to auto-answer and we sorted the issue. The caller then commented that it was a very clear call and he could hear running water in the background and asked where I was. In my waders in a river fly-fishing on one of the finest salmon beats in the country! He was beavering away in London and his single word response questioned my parents marital status

But wanting to maintain professional appearances might not allow that in many circumstances.