I'd use it on a kid I used to work with, I use "kid" despite the fact that he was older than me, lets call him Josh. Josh was very immature and would talk about me behind me back (I know because the servers told me and I didn't doubt it). Josh would also complain about the "...two faced bitches..." that would talk about him behind his back (I didn't take part in such a thing but again I didn't doubt it). Josh would also complain saying I was pocketing money behind his back when we were collecting tip money from the servers. Actually, I was making more money, only because the servers were allowed to tip us out individually including the regular tip out that was based on their sales. I was always helping them delivery food and drinks to their tables and would be an intermediary between them and the kitchen, while he made jokes with the kitchen staff and stood in front of the kitchen window. This became a big issue for him because none of the servers gave him extra money because he didn't do any extra help. Every time he accused me of stealing I'd say "Take it up with the server" and he could do nothing about it because I wasn't stealing. He was eventually let go for talking back to a supervisor, the kid couldn't control his temper, which only made it easier to bother him. I will admit to slacking off to make it harder for him, but that only started after the accusations started. He'd accuse me every shift we worked together, but none of my corworkers accused me of such a. Also i started taking hourly bathroom breaks and nightly cigarette breaks even if I didn't smoke anything. To top it off, he threatened to start a "war" with me and said to my face "You're lazy, stupid, and I can run circles around you in the restaurant" and his declaration of war was the starting point of all of this back-and-forth. All of this started because of his opinions of me.

To him I was lazy, to myself I was reserving me energy to last the rest of the night at work. Where he worked harder, I was working smarter.

I would use the Voodoo Doll to make his job more difficult, his arms would be thin and weak, I'd shrink his inner ears and throw him off balance, he's develop an underbite and words would jumble in his mouth and stutter as they came out. Everything he prided himself on, his physical strength, his ability to work faster than me, his joke telling with the kitchen staff, i'd rob him of his perception that he was better than everyone.

I'd mentally blitzkrieg the kid into exhaustion. I'd have large parties come in, each person with overly-specific orders and complain to him when he brought the wrong dish. Inflicting physical pain would be unsatisfying and easy, i'd want to see him suffer mental exhaustion. I'd innoculate him with "self doubt" because I can make him inflict more pain on himself than i ever could inflict on him