yes, Yellow Pages.

What do you serve that you can't eat?

Tennis ball. That one's piss easy.

correct. this one's a little harder.

What do you throw out when you want to use it but take in when you don't want to use it?

A boomerang? I haven't a clue for this one.

A net?

it isnt any of those i'm afraid.

Garbage can?

Poo-poo?

when would you take in shit?

anyway, the answer was 'anchor'.

What has to be broken before it can be used?

pretty easy.

Egg?

bingo.

What's the greatest worldwide use of cowhide?

bit of a crafty one.

Cows?

yep. also 'holding cows together' which is the same thing.

You answer me, although I never ask you questions.
What am I?

Phone.

I'm on a roll!

thats the one.

What fastens two people yet touches only one?

dont take this one too literally.

Maternity clothes?

A wedding ring.

thats it, a wedding ring.

I am taken from a mine, and shut up in a wooden case, from which I am never released, and yet I am used by almost everybody.
what am i?

...Gold? O.o

Or coal...Maybe silver...*ponders*

Is it some kind of chalk?

It's penis.

i'm sorry, its none of those, but it is a material that's mined.

you are quite close Oddjob, in a sense that the answer in question is used in the same way as chalk.

think more on the 'wooden case' part.

Pencil lead?

Urgh, I was about to say lead, but for completely the wrong reasons.

correct! (OddjobAbe).

He who has it doesn't tell it.
He who takes it doesn't know it.
He who knows it doesn't want it.
What is it?

if you get this right you deserve +rep.

Counterfeit bills?

fucking bingo!

There are four brothers in this world that were all born together.
The first runs and never wearies.
The second eats and is never full.
The third drinks and is always thirsty.
The fourth sings a song that is never good.
what are these four things?

N'Sync.

Orifices in the human body?

The first runs and never wearies: Nose.
The second eats and is never full: Mouth (because it's the stomach that gets full).
The third drinks and is always thirsty: Urinary tract of some description.
The fourth sings a song that is never good: The anus.

That works unbelievably well.