..is the natural healthy vagina*?
What finish holds up better in that environment? Regular bluing, nickel, painted, or fancy drug dealer gold plating? Off-hand guess would be stainless steel - surgical grade. DARPA would probably give you a grant.
* Long ago in the Before Time (pre-internet), in a state far, far away, this commentard worked for the Arizona DoC - never worked a female prison (I'm not insane, I'm a man. Why borrow trouble?) - anyway, seen some interesting things keistered in different security level male prisons. One I'll leave with you:
Remember when your mum told you to never put money in your mouth, because you don't know where it's been? Well, I was working visitation one weekend and the supervisors suspected this random inmate was bringing drugs through. So after his visit, we took him in over for dry cell watch. A Dry cell watch is where somebody is placed under observation over a period of days, given all the food & drinks they want, with nothing but a bucket to do their business in. Then, some lucky officer (guard, whatever), gets to stir through the results with a stick, looking for contraband. On this particular guy, he shat two $20's and a $10. So the next time you go sticking money in your mouth, remember the inmate ATM...
Have a great day!