When the object of a game is to put something in a net (ball, puck, etc.), going "Gatorade" is to place the object in the net at a point where it will hit the goalkeeper / goaltender's Gatorade bottle and knock it off the top of the net.
Hey, Roysie - did you see Marleau's sick-naasty shot last night? He pulled a leg fake and went backhand Gatorade on Luongo!