I did my nipples first. Got some weird looks from some friends who saw me without a shirt.
Then I thought about my scrotum. I pierced it and used some large hoop earrings.
After all that healed I then became obsessed about having a PA. So one day I pierced my penis in the shower. Blood flowed, but I got something in the hole. I then went and got some wire ties, since I am allergic to metal. That was fun.
After that I decided I needed a piercing on the shaft of my penis. So I got some carbon fiber rod and sharpened one end and pierced my penis. I let all the stuff heal.
My PA goes to the left side of my penis just behind the head of my penis. Yes I have to sit down to pee now if I don't have a catheter in me.
Once I did all that, my wife decided that she no longer wanted to have sex and so the stuff I put in my penis to stimulate her, never got used.
Now when I masturbate, I can hang a couple of pound weights on my scrotum to give me a tad of pain and stimulate me to have a harder erection. The PA and other piercing don't get in the way of masturbation. I can also hang some weight on my nipples with S hooks for some additional stimulation. A pound on each nipple is good, sometimes I get more weight on them than that.