Answer:
Possibly the word most commonly said before taking a sip
I occur twice in eternity. And I'm always within sight.
You can tumble in it, Roll in it, Burn it, Animals eat it, Used to cover floors, Still used beyond stall doors. Freshens whatever it is placed on, Absorbs whatever is poured into it. What is it?
What falls down but is never injured?
What is it that no man ever saw, which never was, but always will be?
It can be cracked, It can be made, It can be told, it can be played. What is it?