Everything i've got

I have eyes for you to give you dirty looks.
I have words that do not come from children's books
there's a trick with a knife I'm learning to do
And everything I've got belongs to you.

I've a powerful anesthesia in my fist,
And the perfect wrist to give your neck a twist.
There are hammerlock holds,
I've mastered a few,
And ev'rything I've got belongs to you.

Share for share, share alike,
You get struck each time I strike.
You for me- me for you-
I'll give you plenty of nothing.

I'm not yours for better but for worse,
And I've learned to give the well-known witches' curse.
I've a terrible tongue, a temper for two,
And ev'rything I've got belongs to you.