The act of killing yourself in any video game once victory has been totally given up on.
The word was coined when the world famous Smasher Zio aka ZIO$ began to kill when himself once he got down to his last stock in hopes of shortening the game and moving onto his next loss.
"Nunzio!!!" Bean says as his challenge runs off the stage and kills himself again. "Stop Ziociding!!!"
"You only Ziocide because you don't have the Will To Win!!"