Can you actually solve this riddle?

[Skylar M]

In marble halls as white as milk
Lined with skin as soft as silk
In a fountain crystal clear
There is a golden apple here
There are no doors to this stronghold
But thieves break in to take the gold

WHAT AM I?

I've asked this many times but have NEVER gotten the right answer without giving it away

 

[osmaniac]

well i guess u should just give it away each time cos i dont kno

 

[Sweet Melissa]

It's an egg!

 

[The Saint]

Your mouth, teeth and all?

 

[FCUKXTC]

an egg

answe rmine
http://answers.yahoo.com/question/index?qid=20081110214641AACeYFS&r=w

 

[FCUKXTC]

an egg

answe rmine
http://answers.yahoo.com/question/index?qid=20081110214641AACeYFS&r=w