1. a. a ball, hairy or otherwise, that is profusely unrestrained or widespread; b. a prolific ball or nut (n.)

2. a. a ball or nut, hairy or otherwise, marked by a menacing wildness, extravagance, or absence of restraint; b. an unrestrained or wild ball (n.)

A person or people that purposefully causes chaos or mischief within a group for the sake of entertainment.