I have two arms and a back, Supported by four legs. But there is something I do lack, WHAT AM I ???

I have two arms and a back,
Supported by four legs.
But there is something I do lack,
Actually, I have no eyes to see.

I also cannot move around,
Or at least, not on my own.
Unfortunately I can make no sound,
Except perhaps a squeak.

If you chop off my head,
You are left with a hair.
If you chop off my tail,
Only tea is left there.

One more clue I will add,
Is that you often use me.
Yet you barely ever notice,
In fact I'd much rather be a tree.

What am I?


Answer
A Chair.