Big bang can be an answer.
When I am filled, I can point the way. When I am empty, nothing moves me. I have two skins, one without and one within. What am I?
Ponder upon a creature who exists in disguise Who deals in mysteries and has nothing to tell you except lies Now think about what is constantly the final thing to mend What is the middle of the middle and the end of the end? Now ponder upon the sound you must have often heard When you were looking for the hard-to-find word If you can tie them all together and answer this Tell me what living creature you will always loathe to kiss?