I've just read The Reattachment Machine by Takarta and it is loads of fun. It's about a machine what allows severed limbs to reattached. Instead of using it for the obvious, sane purpose, it is offered to thrill seekers.

The idea is that they deliberately cut off the limb, then reattach it a few moments later so that the person can get the thrill of being severed. Sure, there's the obvious one of having your penis cut off, but this story goes way farther than that. I found it very unsettling.

At the end, I couldn't help but hope that the reattachment of the guy's penis and balls would fail.