Glossy photos of girls on bikes!

Precisely. Pictures of naked men just aren't quite the same, and don't automatically signify SEX the way pictures of naked women do. The rugby player posters are designed to sell you a product by suggesting that you too might achieve their musculature, whereas... oh, for example, the Lynx adverts have been using scantily clad women for years to imply that by buying this product you too can recruit a harem of pneumatic sex slaves.

Vetiver by Guerlain, works every time... Tho' some of my female friends really love Lynx, pheromone-tastic apparentz...

And this is perhaps an example of the typical behaviour of the 'dominant sex' - to express approval or desire in terms of appropriation and ownership. I came across a rather tedious Facebook group where lots of men had posted pictures of Victoria Pendleton, and almost all of them were captioned "the future Mrs John Smith" (or whatever the poster's name happened to be). It amounts to little more than treating women as trophies, decorations, and status symbols.

Just a bunch of silly boys messin' abaht tho', innit? You've met a lot of us now, Emily, and you know it's all internetzbolloxspeak... I hope... :]