A better option is to photograph someone else's rear. 
I'd settle for a back shot. When I was taking Art in high school the teacher gave us a homework assignment of sketching an elephant. Now, I was in a quandry because I couldn't even draw a toothpick, much less something as complicated as a elephant. After thinking for a while, I decided to sketch the elephant from the rear, with ears out from the side and trunk raised. Got an A on the sketch. It was a whole lot easier than any other view (although now that I think of it, an overhead view would have been good too.) Anyway, ever since that sketch I've had a fondness for rear perspectives.
Or if you have a sexy male neighbor you could use pictures of him.
