A pose inspired by a photo seen on the 'net.  Not only did I like the butt shot given, but I liked the hard cock angled down against the sofa, not only showing off the shaft, but bunching the balls nicely together (nice view of the tailhole too, mrrr).

A dragon just seemed to fit.  The thick tail sprouting from the top of those tight buttocks, raised to show off, and even invite one to, what was underneath was sweet, and having a nice long muzzle drawn up in a toothy, impish smile really set the character off :)