So, my wife and I were doing castration play with a pair of garden shears. I was tied up and she had my balls between the blades. She started masturbating, and she slipped and accidentally closed the shears, and they were gone. We decided against going to the emergency room because of insurance and other reasons, luckily she's trained to stitch up wounds and such. She decided to keep my balls though. How she managed to get them preserved I have no idea.