In the penultimate photo, if you look closely, you'll see he appears to be cut. But if you turn the brightness way up on the last photo, he looks like he's uncut. I think that's good enough reason for him to do a full frontal nude shot to solve this riddle.
All of the photos below are much larger than they appear here. You may access a free folder with full-size photos here, which includes some photos of him not seen below.