Magic camel

But what is so magical about it?

Its internal fluid management. Pour a liquid through the top opening, turn the camel upside down, and voila, the liquid doesn’t spill out. Amazingly, it’s even possible to pour another liquid through the lower hole located in the camel’s foot. You can then observe that no liquid flows, either from the top or from the bottom. On the contrary, the liquids come out mixed from the mouth of this miraculous invention.
Enough to impress your friends for evenings on end! Before leaving it in Aunt Yvette's shelf-doghouse. Warning: does not work with Nutella.

And now I see a burning question emerging on your lips: what is the price of this magnificent object, Maryse?

You will be told that you need to buy two (business is business). One that you will keep very carefully as a token of your good faith; and another that you will break out of sight to try to unlock the Great Mystery, and finally belong to the secret society of those who know.

I suppose that it is a double reversed pocket on the inside, so the fluids are not in contact.
A bit like a stomach: http://www.anat-jg.com/PeritoineIntra/App.Digest.Schema/estomac.jpg