Two Zebras

Two zebras are talking and one asks the other:

- Am I black with white stripes or white with black stripes?

The other replies:

- Well I don't know. You should pray to God about that and ask him.

So that night he did and God replied:

- You are what you are.

The next day he said to the other zebra:

- I still don't understand what I am because God just said, You are what you are.

The second zebra responds:

- You must be white with black stripes or else God would have said, Yo is what yo is.