Answer:
It flies around all day but never goes anywhere? What is it?
I know a word of letters three. Add two and fewer there will be. What is the word?
By Moon or by Sun, I shall be found. Yet, if there's no light around, I am undone. What am I?
I increase head turning rate tremendously for girls at the beach
I have a ring but no fingers. I used to stay still all the time but nowadays I follow you around.
No matter how little or how much you use me, you change me every month.