In Dorset, the Cerne Abbas Giant sports an erection that is 12 metres long. Even back in the first century BC size mattered.
An erection is basic hydraulics. When you get horny your heart beats faster and sends blood rushing to your penis. The force of the pumping fluid creates a rigid pressure, and hence an erection.
This process is a reflex action, but one that you can consciously influence, although the general assumption that if a guy has an erection he wants sex is not necessarily the case. A friend of mine once told me that her boyfriend woke up every morning with a huge erection that he never wanted to do anything with. She naturally assumed it was her breath, but she was wrong. Morning erections are not really an indication of sexual arousal. A man experiences an average of three to five erections during REM sleep each night. If he has been dreaming about the mortgage, his spontaneous erection won't translate into conscious feelings of sexual arousal without stimulation.
Unconscious erections don't just happen in bed - just ask any teenager who has ever been to a swimming pool. Nor does the trouble stop once men have got beyond puberty - public transport is often cited as particularly hazardous. The combination of vibrations, visuals and ennui are lethal. In this situation the best ploy is to stand up rather than attempt to conceal yourself behind a newspaper - unwanted erections are more likely to happen if you are sitting down because the veins that carry blood out of the penis are closed. Anxiety can make erections disappear but stress during exams seems to bring them on. Fear is also known to induce an erection - fighter pilots often go rigid with terror during air battles.
However, in the normal scheme of things, if a man's penis is stimulated, he gets an erection. According to Kinsey (1953), "In some males, the erection of the penis occurs in a matter of seconds."
To us it seems that some males orgasm almost as quickly. Contrary to popular female opinion, this is not something that men feel ok about. …