i know some tat.artist who do it. but it isn't easy to do on some guys because of the skin. it has to be stretched out to see what is being done. as the penis skin isn't like your arm or leg, back, etc. its usually shriveled up and has to be held out an stretched smooth to keep from getting wrinkled up an ending up with a bad tat. and any real tattoo artist doesn't want that kind of reputation. also the penis tats are usually much higher than the others are. in the area i live near it is more common to get a female to tat your cock than a male. but i do know 2 males who do it but they charge extra for doing it their. the female artist i know charge depending on what you want an such. also pain tolerance depends on the person as well. Ive seen 3 guys get their cock tat. and one shriveled up so small from the pain he had to stop for a while before it could be completed, and after it as done he had swelling for a few days an was really red. also some times the ink fades away their in some guys. but the other guy didn't even feel it much said it was like a small bee sting or something didn't hurt him really. the other one hurt off an on during the process but he went completely around with a band on his cock, and usually when they get to the underside of the urethra it is pretty sensitive for a tat their but it can be tolerated just depends on how bad you want a tattoo on your cock really. hope was some help to you.