A father asked his 10 year old son if he knew about the birds and the bees. "I don't want to know!" the child said, bursting into tears; "Promise me you won't tell me."

Confused, the father asked what was wrong. "Oh dad," the boy sobbed, "when I was 6, I got the 'There's no Santa Claus' speech. At 7, I got the 'There's no Easter Bunny' speech. When I was 8, you hit me with the 'There's no tooth fairy' speech. If you tell me that grown-ups don't really shag each other, I'll have nothing left to live for."