Bring the pain... And hear me roar

A chill.. In my bones or the air? Who knows.
A shackled neck, and feet - missing toes.
Here come the knives.. & the scarlet flows.
A smirk on my face as the pain only grows.

Thrashing and flailing.. From torture I groan.
But only inside, for outside I am stone.
You may see no grimace, and hear no moan.
Matters not that you're a hundred and me? I'm alone.

You may smash my skull between the wall and door
Or gouge out my eyes and through my thigh, bore.
Come tear off my arm and slice it to four.
Yes, bring the pain and hear me roar.