During a game of beer pong, a Poché is the act of chugging a cup with the ball still inside, cradling the ball on the lips, then with a "THWUKKK" sound, spitting the ball across the table and making a cup.
Best when performed when a player would like to win in style, lose in style, or when a player is quite drunk. Also best performed without a shirt.
"I just made a poché. That was awesome!!"
-"Yeah man, way to go."