Simple game, low buzz factor. None the less entertaining when a good buzz is already attained. Required supplies: people, and of course, beer.
Sit in a circle. The first player says 'one,' the next player says 'two,' and so on down the line. However, when someone reaches a number that is divisible by 7, s/he says "buzz."
If the player misses a "buzz" when needed, or when an unnecessary "buzz" occurs, that player drinks.