I'm posting this, because it may (or may not) expand your vocabulary. The game is called Shiritori. It can last for a good while. (The forum I got this from had 52 pages and was started in June. [still going])
Basics: You put down a word. The next person has to puts down a word that starts with the last letter of yours. (The word can be in any language, just be kind enough to let us know which one)

Example:
First Person: Yes
Second Person: So
Third: Open
And so on.

Is anyone up for it?