[M]y poor seventh-grade Catholic school teacher sent the boys to the library and informed us that the Ministry of Education said we had to have sex education, since we were in Grade 7. Sex happened, he told us, when the man inserted his penis into the woman's vagina, and we each had a slip of paper on which we could write an anonymous question that he would answer.
I thought about it for a while, and wrote, carefully, "Why?"
It was much, much longer before I figured out the answer to that. Mr. P. apparently didn't feel qualified to attempt an answer.