I have got another idea.
Nail his wrists and achiles heels to a wall. From there, hold his head up. Take a sword and make him swallow it, you know like the circus professionals.
Then, stab him from the inside, still holding his head up. After he feels the pain from that, return his head to normal, with the sword still in there. That way his throat is completely cut inside.
With his head in the normal position, rip the sword back out.
If he is still alive and able to swallow, make him drink some salt water.
Then make him eat Wasabi.
THEN stick maggots down his throat.
While the maggots are eating his insides, stick some more up his nose and into the brain along with... what's it called, an earwig? Yeah, stick a bunch of maggots and earwigs up his nose and his ears.
After a few moments of him screaming in pain, take a thin hook, shove it up his nose, and pull out his brains.