From the sport of paintball, in the form G(number) or if a player were to ask for a G count. The G count is the number of dead opponents. G count is used to keep communication with your team and plan out attacks to close out a game. G counts can range from 1-7 at tournaments but usually a lot more at local fields where G counts are usually off.
(see example 1)
Some times used to pinpoint an actually player as being dead.
(see example 2)
Front player: "Whats the G count?"
Back player: "G6, Back Right only"
Front player: "Alright i'm gonna bunker him"
Front player: "Snakes hot!!!! I'm pinched!"
Mid player: "Got him!"(shoots out snake player)
Mid player: "Snakes a G! Snakes a G!"