The Stewart Robson dragon penis tattoo is remarkable, intriguing and brilliant in the technical sense. There is an old thread from many years ago on LST "Areas Of Your Body You WON'T Tattoo", page 11 has Stewart's comments on that tattoo. If you search the internet you could probably find Stewart's detailed blog post and pic of it. I think that was that gentleman's first tattoo and he was prepared and had a firm vision which Robson executed with amazing skill . You could also search for Matt Gone (checkerboard man), I've talked to him in person about his tattoos. His website has some pretty graphic details about his underwear zone tattoos. You will probably have more luck getting info (or trolling) on the BMEzine backpages.
Black out "piercer arm" is one thing...but "percier arm" penis is another ! LOL
just pierce your cock or do a head split if you're feeling that kinky.