I tend to repeat this "story" whenever I'm assigned tasks which I deem to be improbable or bound for failure. For example, being responsible for something without the authority...
All the organs of the body were having a meeting, trying to decide who was in charge.
"I should be in charge", said the brain, because I run all the body's systems, so without me nothing would happen".
"I should be in charge", said the blood, "because I circulate oxygen all over, so without me you'd all waste away".
"I should be in charge", said the stomach, "because I process food and give all of you energy".
"I should be in charge", said the rectum, "because I'm responsible for waste removal".
All the other body parts laughed at the rectum and insulted him, so in a huff, he shut down tight. Within a few days, the brain had a terrible headache, the stomach was bloated, and the blood was toxic.
Eventually the other organs gave in. They all agreed that the rectum should be the boss.
The moral of the story?
You don't have to be smart or important to be in charge... just an asshole.