Since it's Friday and others are playing games, here's another one to take us into the weekend.
Everyone knows about those Russian nesting dolls (called matryoshka dolls, I believe). A small doll nests inside a larger, which itself is inside a larger doll, and so on.
This game does the same with words. You start with a three-letter word, add a letter to make another word, and so on. Longest word wins. The catch? Each additional letter has to form a legitimate word.
Here's one to start you off:
bur
burr
burro
burrow
burrows
Good luck.