The flow of coffee that first comes out of the coffee maker when brewing a new batch of coffee. This really only applies to the standard, counter-top, drip style brewers. The "first fruits" are the lowest acidity, highest flavor a batch of coffee will ever be.
The best way to brew and drink good coffee in an office environment is to start the brew cycle but leave your cup under the drip spout. When your cup is full, put the coffee pot back under.
This feature of coffee brewing is evidenced by the growing popularity of one-cup-at-a-time brewers, such as the Keurig and Senseo brand single cup coffee makers.
"It is better to take the first fruits than be left with the pot." - Anonymous