Depends. You wouldn't need much if you gave him an enema of sulfuric acid, but it would probably be fun to watch.
if you gave him an enema of sulfuric acid....![](http://www.ashleyfood.com/acatalog/rectal.jpg)
Or Rectal Rocket Fuel.
Seriously, though: this guy is an extreme sicko. I can't help wanting to run him through a meat grinder.