Answer:
It's anything but amusing when this body part gets hit.
In your fire you hear me scream, creaking and whining, yet I am dead before you lay me in your hearth.
What always runs but never walks, often murmurs, never talks, has a bed but never sleeps, has a mouth but never eats?
What does man love more than life, fear more than death or mortal strife. What the poor have, the rich require, and what contented men desire. What the miser spends, and the spendthrift saves. And all men carry to their graves.
You can hold it without using your hands or your arms. What is it?
Iām grown from darkness but shine with a pale light. Very round I am and always a lady's delight.