Now there is another way in which the semen, or seminal fluid, can leave the body, and sometimes does. This is from something that I suppose every normal boy that ever lived in this world has done, some time or other. And that is rubbing or handling his penis until it causes a pleasant sensation that is usually followed by the forcible ejection of some whitish fluid, which of course is the semen we’ve been talking about. And this, which has been given the name of masturbation, is something about which there’s been more misinformation and pure bunk than any other thing I can think of at the moment.