>>33647301Kirt uses it as a special anal bead that he shoves up his ass, and then expands it to stimulate his prostate.
It's the Gastro-Intestinal Stimulation Ball.
GS Ball for short. It was never intended to be used to catch or hold anything.
Instead Ash was just carrying a high-tech anal bead with him the entire time. Who knows what Team Rocket wanted it for though.