Answer:
It's anything but amusing when this body part gets hit.
What always runs but never walks, often murmurs, never talks, has a bed but never sleeps, has a mouth but never eats?
There is someone, and there is always another, for without the other, there wouldn't be one
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it can neither see nor feel it. What is it?
What flies around all day but never goes anywhere?
I have two eyes in the front and a lot of eyes on my tail