I shave every day, but my beard stays the same. What am I?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

No matter how little or how much you use me, you change me every month. What am I?

Who has married many women but was never married?

I am written with two letters.
I said with the one.
I usually am seen with the two.

Who am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

What am I?

I am a word of 12 alphabets.

* Alphabets 12, 4, 7, 2, 5 : Eastern beast of burden
* Alphabets 1, 8, 10, 9 are street made famous by Sinclair Lewis.
* Alphabets 11, 3, 6 are past.

On whole it means a person suffering from delusions of greatness.

What Is it ?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?