Not an oversized one, just a good old big hammer.
Now imagine having me tied down to a big stone slab (or a metal bed)
Imagine you are crushing my body bit by bit with the hammer, turning me into paste little by little while I scream in pain and beg for mercy.
Imagine I am crying after one destroyed arm that it is enough. Imagine I am hoping that after two arms you have crippled me and want to stop.
But then you move to the legs and at this point I am hoping and praying that you will be satisfied after being done with them. At this point my face has distorted so much because of the pain I don't even look human anymore.
And imagine my horror as I realize you are not done with me after crushing my legs, as you start hammering my crotch. Imagine my terror as I realize I am going to die as you keep turning my body into paste. My screams now sound so pathetic, there isn't even any discernible pleading in them anymore. And my relief when, after I can't breather anymore, you finally finish me by crushing my stupid face.
Wouldn't that be nice?