The act of thrusting one's hips forward and launching a projectile panther from one's crotch. Best depicted in the video "Powerthirst 2." Its creation has been credited to you, because you are "too energetic for normal sports."
"Similar to Bear Blasting"
Person 1: "Hey, do you want to play some football?"
Person 2: "No, but I've been practicing my humpcatting!"