Quote Originally Posted by Animeniax
Well if you leave the object inside the brain, it could not regenerate to the point where it would be functional. If there's an axe blade jammed between the lobes of your brain, no matter how much it regenerated, your brain wouldn't work right.

Along those lines, it sure would be nice to be immortal, but stuck inside a steel coffin, or inside a concrete wall or structure.
You could wait so many years that the coffin/structure or whatever is degradated enough so that you can escape.

Regarding the question of the thread, I have no one I can call a best friend. I have many friends and the like, but nothing as best. Maybe some are better than the others, that's all. And I do not think I'm the best friend for someone. So I guess the question doesn't apply.

I could try to stretch it, into thinking what I would do if I had a best friend, the problem is that I think I do not have the mind structure that qualifies to answer. Having no best friend, I do not know what it is, so it's a bit hard theorize about it.

The other point is the kiling. I guess it's the greatest problem here. Are you able to kill, is the first basic part of the question.
I think I am not able to kill a human being. I can't tell I would'nt be able regardless of the circumstances. Maybe I could be able if I'm incredibly pissed at someone, enough for loosing judgment/reason, but then I'd need something that enables me to kill.
Maybe if faced to a choice beetween my life and the life of someone else. Or the life of someone I hold dear and someone else etc...
But I think that I'm not able to. So I guess I do not qualify, again, for the question.