>>2393
If you sit on the sharp pole it will just come out of your belly unless you will be in some confined space which prevents you from bending.

Besides that, I would >>2668 second idea to use explosives.
stuff them in your ass or pussy and boom.

Or just tie a rope around your neck and jump from the building for easy spectacular decapitation.

For something more complex take opium and stab and cut yourself everywhere with the knife rip out your internal organs until you die to pretend that it was some assault to mess up with police which will later have a hard time investigating what happened. As nobody will believe you did that to yourself.