Speaking of sex and children, a German couple who went to a fertility clinic after eight years of marriage have found out why they are still childless. Doctors subjected them to a series of examinations and found they were both apparently fertile, and should have had no trouble conceiving. A clinic spokesman said: "When we asked them how often they had had sex, they looked blank, and said: "What do you mean?". The couple, it turned out, was not having sex! They were simply unaware, after eight years of marriage, of the physical requirements necessary to procreate. (Source Ananova)