When you visit a foreign city you are in it, but not of it, separated by a glass wall. Once, while a student, I was getting dressed in my ground-floor room when a family of Italians crossed the grass to watch, as if I were laid on for their amusement and instruction.

In Washington, the first thing people tell you is what their job is. In Los Angeles you learn their star sign. In Houston you're told how rich they are. And in New York they tell you what their rent is.

Life was so much simpler in pre-video days when everyone refused invitations because the 'Forsyte Saga' was on. Now we all just have a long list of unwatched shows, all of which, it seems, our friends are raving about. I feel as outdated as if I wore a Fair Isle sweater, ate Pot Noodle and had a two-bar electric fire in the sitting room.

I also learned to play Fruit Ninja on an iPad. It is quite hypnotic, and I hope one day to get past 100 points. I remembered that David Cameron admits to being an addict. I wonder if it helps him in his work. 'Great, just destroyed a pineapple! Reminds me, shall we send those grenades to the Syrian rebels?'

In Washington, success is just a training course for failure.

While it is entirely untrue that Canadians lack a sense of humour, the funniest ones tend to head south: Dan Aykroyd, Jim Carrey, Michael J. Fox.

I cannot be alone in being pretty nauseated by Red Nose Day, or at least its television manifestation. Do I think that wretchedly poor children in Africa should get food and life-saving drugs? Of course. Do I want to be hectored into contributing by celebrities who earn more in a 10-minute slot than many of these families get in a year? Nope.