I recently read an interesting post on a blog about a survey that had been carried out by Swiss doctors of reactions to penises. A group of women were shown more than a hundred photos of cocks and asked to comment on colour, skin tone, veins, length (of course!), girth and the colour and shape of the heads. I wondered why gay men weren’t included in the assessment group. I also thought that it was curious that foreskins (or absence of same) were not mentioned.