Plays a pumping beat starts low at first, barely audible but causes all who hear it to twerk their booty as it grows uncontrollably. Victims retain their mind and personality, ensuring that they are fully aware of their expanding backside. More junk in the trunk piles on making the butt heavier and more jiggly. Mass increases until victims are twerking on all fours. Can only be defeated by being crushed by a comically oversized butt. 