The Dog, the Monkey, the Cow & the Man

*credits to bauer of PD*
On the first day God created the dog. God said, "Sit all day by the
door of your house and bark at anyone who comes in or walks past. I
will give you a life span of twenty years." The dog said, "That's too
long to be barking. Give me ten years and I'll give you back the other
ten."
So God agreed.
On the second day God created the monkey. God said, "Entertain people,
do monkey tricks and make them laugh. I'll give you a twenty-year life
span." The monkey said, "Monkey tricks for twenty years? I don't think
so. Dog gave you back ten, so that's what I'll do too, okay?"
And God agreed.
On the third day God created the cow. "You must go to the field with
the farmer all day long and suffer under the sun, have calves, and
give milk to support the farmer. I will give you a life span of sixty
years."
The cow said, "That's kind of a tough life you want me to live for
sixty years. Let me have twenty and I'll give back the other forty."
And God agreed again.
On the fourth day God created man. God said, "Eat, sleep, play, marry
and enjoy your life. I'll give you twenty years."
Man said, "What? Only twenty years? Tell you what, I'll take my
twenty, and the forty the cow gave back, and the ten the monkey gave
back, and the ten the dog gave back, that makes eighty, okay?"
Okay," said God, "You've got a deal."
So that is why the first twenty years we eat, sleep, play, and enjoy
ourselves; the next forty years we slave in the sun to support our
family; the next ten years we do monkey tricks to entertain the
grandchildren; and the last ten years we sit on the front porch and
bark at everyone.

Life has now been explained to you.