Female birth control is much more complicated, because once sperm are safely inside a female, they become very aggressive. They barge up and down the various feminine tubes and canals, hooting and whistling, until they locate the egg. Then they strike up a conversation, feigning great interest in the egg’s personality, but actually looking for the first opportunity to penetrate.

There is no absolutely foolproof way to stop this fertilization process. The old wives’ tale, of course, is that a female could avoid getting pregnant by not having sex, but this was disproved by a recent experiment in which Harvard University biologists placed 50 old wives in a locked condominium for two years, and 35 percent of them got pregnant anyway merely by looking at pictures of Raymond Burr.

But there are things that a woman can do. She can insert one of the many feminine insertion devices shaped like alien space vehicles, which are designed to scare the sperm into stampeding right back out the vestibule. Or she can take the pill, which messes with her hormones in such a way that her body gets fooled into thinking it is already pregnant. The egg gets all bloated and starts to feel weepy and nauseous in the morning, and when it comes clomping down the fallopian tubes, the sperm all go stampeding right back out the vestibule.

What the public is eagerly awaiting, of course, is a birth-control pill for males. If you ever see members of the public gathering in eager little knots, that’s what they’re waiting for. The male medical establishment has been assuring us for years that such a pill is right around the corner. “Believe us,” they say, “there’s nothing we’d rather do than come up with a pill that messes with our hormones, so we can take this burden from the women, who have been unfairly forced to bear it for far too long. In fact, we’d probably finish developing the male birth-control pill tonight, but we have to play league softball.”