Sex Life
God told man, "I'm going to give you 10 years of a normal sex life." Man said, "That's not enough. The way I feel, I need much more." God said, "If I give you something, don't complain." Man said, "But sex isn't just SOMETHING." God said, "Look, I'm busy. We'll talk again."
God called the King of the Beasts to him and said, "Lion, you've got 20 years of sex life." The lion said, "Ten will be enough." Man said, "Let me have the extra 10." God nodded and said "You've got it."
God then gave the monkey 20 years. The monkey said that 10 would be enough. Man raised his hand. God nodded and gave him the extra 10.
Before the day was over, God had given 10 years the donkey didn't want and a final 10 that the parrots couldn't use.
That may explain why men have 10 normal years of sex, 10 years of lion about it, 10 years of monkeying around with it, 10 years of being an ass about it, and 10 years of talking about it!