In the human body, which organ is in charge?

All the organs of the body were having a meeting, trying to decide who was
in charge.

The brain said: "I should be in charge, because I run all the body's
systems, so without me nothing would happen."

"I should be in charge," said the heart, "because I pump the blood and
circulate oxygen all over the body, 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 a butthole.