My Uncle Roy introduced me to this parable/joke and it has been one of my favorites ever since.
Once upon a time there was a nonconforming sparrow who decided not to fly south for the winter. However, soon the weather turned so cold that he reluctantly started to fly south. In a short time ice began to form on his wings and he fell to earth in a barnyard, almost frozen. A cow passed by and crapped on the little sparrow. The sparrow thought it was the end. But the manure warmed him and defrosted his wings. Warm and happy, and able to breath, he started to sing. Just then a large cat came by and hearing the chirping, investigated the sounds. The cat cleared away the manure, found the chirping bird and promptly ate him.
The moral of the story:
Everyone who shits on you is not necessarily your enemy.
Everyone who gets you out of the shit is not necessarily your friend.
Finally, if you're warm and happy in a pile of shit, keep your mouth shut.