Answer:
Tool of thief, toy of queen. Always used to be unseen. Sign of joy, sign of sorrow. Giving all likeness borrowed.
This is in a realm of true and in a realm false, but you experience me as you turn and toss.
What word is a plural, but when you add an "S" to the end, it becomes singular?
who do you think you know but sometimes you don't
I know a word of letters three. Add two, and fewer there will be!
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?