About the Birds and the Bees
A father asks his 10-year-old son if he knows about the birds and the bees.
"I don't want to know!" the child says, bursting into tears. "Promise me you won't tell me!"
Confused, the father asks, "What's wrong?"
"When I was six, I got the ‘There's no Santa' speech. At seven, I got the ‘There's no Easter Bunny' speech. And when I was eight, you hit me with the ‘There's no tooth fairy' speech."
"Now if you're going to tell me that grownups don't really get laid, I'll have nothing left to live for."