This is a rig containing bones for the penis. Everything else is the default skeleton. There are two new bones for the penis, one for both testicles, and one for more control of each single testicle. Sadly, the weights don't work correctly, so the new bones don't do anything. So if someone wants to animate a penis, he still has to add the correct weights manually. If this can be fixed, it will be updated.
CC0 - Creative Commons Zero