I could hardly believe my daughter's announcement: her second grade classmate was "having S-E-X" (yes, she tried to spare us some shock by spelling the three-letter word!). When pressed by her surprised parents, my daughter asserted, "Yes, Dad, she told us on the playground. When she goes home from school, she goes next door to the neighbor's house. He's in third grade. They take off their clothes, get under the covers, and kiss and stuff."
A friend of mine who was an outstanding youth leader was dumbfounded when his daughter told him one day that she was pregnant. He had given dozens of talks about sex and relationships, yet somehow failed to recognize the needs of his own daughter.