What does dropped a Sushi mean?

dropped a Sushi meaning in Urban Dictionary

if your residence pet both shits and pisses in your sleep, purely out of revenge or defiance. Occasionally compounded, if the act under consideration happens throughout the owner's lack, in addition to waste is later kept to ferment for an excessive period of the time. Called appropriately after the infamous feline "Sushi Bum-Bum". Third-Dan black belt, within the art of Turd Dropping.