On the fourth day, God created man and said to him, "Your job is to sleep, eat, and play. You will enjoy very much in your life. All you need to do is to enjoy and do nothing. This kind of life, I'll give you a 20-year lifespan."
The man objected. "What? Such a good life! Eat, play, sleep, do nothing? Enjoy the best and you expect me to live only for 20 years? No way, man! Why don't we make a deal? Since the cow gave you back 30 years, and the dog gave you back 10 years and the monkey gave you back 10 years, I will take them from you! That makes my lifespan 70 years, right?" So God agreed.