Here's a teaser for you all:
Name the four countries of the world which have one syllable names.
Eire doesn't count because it's pronounced with two syllables (though correct me if I'm wrong, then name four more). Wales doesn't count because it's part of the United Kingdom.
OK, maybe Wales counts. I like Wales. I've never been to Eire.
But there are four more.
If I feel like it I'll reveal the answer in a few days.
Or, if that's too easy, try these:
Five professional UK football clubs with an 'x' in their name.
One London Underground station containing none of the letters of the word 'Mackerel'.