Imagine you're at the zoo. As you pass the monkey cage you stop to observe these amazing creatures. You're entranced. Their gestures, their interactions are so familiar... so reminiscent of human relations. One monkey stares at you with a look of such deep understanding in his soulful eyes that you think to yourself: Could they be thinking, feeling, wondering the same way we do? Could they be loving, hurting, dreaming like us? Are we really any different?
Then you notice the monkey doing something, but you can't quite figure out... oh, he's reaching around and grabbing... his own fecal matter. He then winds up, launches the warm mass, which lands squarely on your pant leg, and scampers off laughing.
Life is like a monkey: Just when you start to take it too seriously it throws shit at you as a reminder that you should just laugh at it and move along to the giraffe exhibit.