I saw this on an episode of Mad Men. Apparently it goes something like this: You have to name a city, and the next person has to come up with a different city that begins with the last letter of the previous.
Ex: Johannesburg. Next person would have to say something that begins with G: For example: Guanzhou in China. (the city can be anywhere in the world of any size.)
Got it?
I’ll go first: Havana.