What to bring:
1.) thin-bladed knives, like fillet knives or scalpels.
2.) bottles of both lemon juice and salt water for the "normal" usage
3.) bottle of mercury for the finale
4.) strong ropes (or chains) and cuffs for ankles, wrists, and neck
5.) tarps
6.) bleach and/or peroxide, for clean-up
If you apply thin, shallow slices with the blades, then douse the area in either salt water or lemon juice, the burn will last a looot longer. And if you give it juuust enough time for the wounds to heal, it'll be a "fresh" pain each time. You can slice different areas each time, too. Feel free to continue until you feel better, or the person is covered with scars to the point they can't feel it anymore, whereupon you use the mercury on a new set of slices to give them a slow, agonizing death. 
...and no. I won't answer questions. 
