It's not something I'd even consider now, having seen a few.
I remember seeing a guy on Shoreham beach (UK) a few years ago. He jingled when he walked. He had a large PA, but also had a couple of rings at the base of his shaft and you couldn't actually see his scrotum because of all the rings he wore. The scrotal rings all had little balls on, which made the jingling noise as he walked.
Another friend of mine used to carry a Polaroid of his cock whenever he flew anywhere. He had a huge ring through it. It would clunk against the units in his kitchen when he was cooking.
There was a stripper on the London scene a few years ago, I can't remember his name. He had two bars through his shaft. He also loved to pour hot wax over it as part of his act.