Hey, a guy has to have a little fun once in a while! My wife was laughing so hard she couldn't hold the camera still. To make the photo meet BPL's high modesty standards, she did a little work in Adobe Photoshop to make the lower part blurry. BPL is focused on function, not fannies. Besides, you were supposed to be looking at the pack!
While I'm confessing, I did hike naked one time in the Grand Canyon, in the same area that Colin Fletcher did. It was fun, but there were certain disadvantages :). I would post a photo, but it was taken with a film camera (remember them?).