Only males over 60 will really understand. There’s this strange little gland halfway down the body, which so far you haven’t been aware of at all. By the time we’re 70, 80% of us will have an enlarged prostate gland, and that might mean obstruction of the urine flow. Embarrassing. Who wants to talk to the doctor about that? Especially if that might lead to a rectal examination, when they put a gloved finger in your backside, and then give you pills whose possible side effects include “prolonged and painful erection that can last from several hours up to a few days.” (To be fair, that particular one does comes under the heading Very rare). Not nice at all. So you’d be tempted to say nothing, except that this could be an early stage in prostate cancer, which can kill you. What was that about penis envy?