FTAOD I was thinking of intentional cosmetic modifications, but feel free to tell me about your neural jacks, consensual alien parasites, nanotech imune system upgrades, etc.
Oh, I didn't think to count mine as not work-safe. I don't tend to display it at work. But then I don't tend to display it socially. This is more due to fat bellies being considered socially unacceptable in public then to navel piercing in particular.
no subject