In the Unreal Tournament franchise, it is the explosive result of hitting a shock orb with the Shock rifle's primary fire. This maneuver however, requires perfect aiming while moving around in order for this technique to be reliable. Additionally, you can intercept an enemy's shock orb to pull one off.
Example A: Player couldn't avoid the blast from Xan's shock combo.
Example B: Gorge made a tactical error with his shock combo.
shock combos are cool, he shocked me, then gave me the tongue twister