step one, starve him for 2 weeks (make sure he is alive bc I learned on mythbusters that humans can survive 3 days without waterithout without food, during this time, make a very vile substance using the grossest shit you can find, also chain his limbs into the wall, make a machine (inspired by mythbusters) and wrap dental floss around his cock, activate the machine and the dental flis a will spin, eventually, the floss will cut into his cock and eventually cut it off, also give him small electric shocks, enough to give him pain but not kill him, when the vile food is done, (include fish bones) force feed him fiberglass and the vile substance, the fish bones will puncture his organs on the inside, stomach too if you are lucky, then force feed him come and mentos then tape his mouth and nose shut so the gasses can't escape, pressure will build in his body, and if you put enough pressure, it will rupture