Coined in in Battlefield 3 game by EA and Dice (PC PS3 XBOX360) as a voice option for killing another player with a defibrillator.

Abbreviated or Short version of "ZAP ZAP MOTHER FUCKER"
Popularized and started by the player BarbieDoll-Vi, written in the in game chat box as a taunt, or brag for a recent kill with a defibrillator.
Also used by players of the defibrillator_kill platoon. Tag BZZZ as in the electric sound of a defibrillator.