You can write jokes at any point of the day. Jokes are not that hard to write, or they shouldn't be when it is literally your job.
John OliverI think deep down, this planet yearns for the days of the British Empire again. They long once more to be treated that badly, that politely. We did far worse things than you can possibly dream of, but we did it with that certainly gentlemanly swagger... Dreadfully sorry, but we seem to have crushed your entire continent's infrastructure. Allow me to make it up to you by offering you a job 4,000 miles away. No, no, I insist.
John OliverI think Americans still can't help but respond to the natural authority of this voice. Deep down they long to be told what to do by a British accent. That's why so many infomercials have British people.
John Oliver