in gears of war, to use a grenade and melee (B) and stick the grenade to an opponent. Used mostly by n00bs and people trying to obtain their Is it a Spider? achievement.
by Seriously.... January 08, 2007

A fuel source found on the planet Serra, it looks like yellow lava; the whole reason for Emergence Day.
Cole: "Look at all that Imulsion!"
Dom: "Hey Fenix how much would you say all that Imulsion is worth?"
Fenix: "I don't think I can count that high."
Dom: "Hey Fenix how much would you say all that Imulsion is worth?"
Fenix: "I don't think I can count that high."
by Seriously.... January 09, 2007

Stands for Coalition of Gears. From the best game ever, Gears of War. The COGs are the good guys that help fight the locust horde. The team every noobie wants to be on in multiplayer
by Seriously.... January 09, 2007
