A little girl runs out to the backyard where her father is working, and asks him about sex.
Her father sits her down, and tells her all about the birds and the bees. He covers a wide and varied assortment of topics and sub topics and by the time he's finished, his daughter is somewhat awestruck with this sudden influx of bizarre new knowledge.
Her father finally asks, "So what did you want to know about sex for?"
"Oh, mommy said to tell you lunch would be ready in a couple of secs.