Masturbation

A few hundred years ago it was seen as wrong to masturbate yet today it is accepted, though not neccesarily talked about comfortably, as a usual and normal sexual act.
Men used to have to wear various appliances to cause pain when an erection happened.
http://www.coolnurse.com/masturbation.htm - this website promotes masturbation as being healthy as well as giving a brief history of when it was deemed wrong to do so.
Today, there are various chain stores dedicated to providing 'sex toys' for people to experiment with in the bedroom, also online there is a boom in purchasing adult applliances as there is less embarrassment involved than having to be seen entering an adult shop. This shows that there is still somewhat of a taboo attached to the act today no matter how far advanced we have become regarding views on the topic.
Here is an example of an anti- masturbation device