So a Zebra goes to heven and is at the pearly gates

an angel says are you a white zebra with black stripes or a black zebra with white stripes

The zebra replies i dont know

The angel says go to god he'll tell you

The zebra goes to god and askes the question

god replies you are what you are

the zebra goes back and says god told me i am what i am

the angel says that means your a white zebra with black stripes because if you where a black zebra with white stripes you would have said i is what i is