Posted 2012-February-28, 08:48
I describe the game backwards, and leave out a lot of details. One of the players will lead a card, players have to follow suit in order around the table, the highest card of the suit led wins, and that player leads the next card. That's a simple idea to grasp. Then I'll mention that there could be a trump suit, and that one of the players' hands will be face-up on the table. After that I'd describe the bidding in general terms (you and partner are trying to decide how many tricks you can win, and what suit should be trumps).
I would never try to explain the scoring to a non-bridge-player who asked casually. While it's unquestionably the heart of the game, I think that it adds too much complexity for a beginner. I'll mention the scoring, and that there are opportunities to increase the stakes (those familiar with poker, blackjack, craps, or even backgammon will find that a familiar note), but not explain any of the details.
BCIII
"If you're driving [the Honda S2000] with the top up, the storm outside had better have a name."
Simplify the complicated side; don't complify the simplicated side.