“You know the one about the old man whose grandson is getting married? Just before the wedding, he calls the boy in for a chat. “My child,” he says, “I want you to know that all marriages go through phases. At first, you and you wife will make love all the time. But then, as the children come along, you will find that you are having sex less and less. And by the time they are grown and gone, you’ll be just like your grandmother and me. All you’ll ever have is oral sex. I just wanted you to know how things will go.” The boy looks at him, incredulous. “You and Grandma have oral sex?” “Every single night,” the old man says, “and it’s a perfectly natural thing. She goes into her bedroom and calls, ‘Fuck you!’ And I go into my bedroom and call back to her, ‘No, fuck you!”