After reading various stories such as "Ball Shackle Story" and "One Night Stand," I became a bit obsessed with finding a device that could be locked around a man's scrotum above his balls, that he would not be able to remove. I wanted a device that: Could be worn indefinitely, assuming someone else holds the keys Was not able to be removed, IE not by lock picking, not by bolt cutters, etc The biggest problems were finding a device with good enough security and that was just the right size. The hasp clearance had to be small enough so removal was impossible without the key, and large enough to not prevent blood flow, nor be too painful to wear. The good news is that after years of on and off again searching (and buying many padlocks that would not work), I finally found a padlock that works. It is made by ABUS in Germany, and is locked using disks, in this case 7 disks. If you know about how padlocks work, you know that disk locks are very hard / close to impossible to pick. Anyway, if anyone else has this fetish, they will want to get one of these locks and see if it fits them. The model number is: 17RK/70 by ABUS. Amazon UK sells them for a bit over $100.