That's nut how you do it
My brothers a paramedic and he has many stories, mostly pertaining to peeling dead motorcycle riders off the road and giving overdosed junkies Naloxone shots only to be abused by them 'fah ruinin mah high ya cunt'.
But he has a couple of nasty arse and cock tales as well and this story seems to fit into this weeks question.
Upon arriving at an older gentlemen’s house after he had called for assistance, the old fellow dropped his pants and showed off his balls, which my brother described as about 5 times bigger than they should be, dark blue and very dead looking.
What the crazy old badger had done for kicks is weld a metal clamp around the top of his balls, just below his cock. Apparently he'd been doing this for years as his 'off' but this time couldnt remove it. He left it there for weeks before seeking medical help.
Luckily he only lost one of his nuts.
(technocore, Wed 23 May 2012, 6:18, 2 replies)

similar freakishness
My friends dad was a paramedic and told me of attending such a pervert.

This guy had apparently sliced open his scrotum and severed his testes during what I can only think of as the most twisted wank ever.
(Greencloud Wanted to go fishing on, Wed 23 May 2012, 8:00, closed)

Welding
around his scrote? I was going to comment that he must have had some massive cojones, but I suppose there's no need.
( monster munch person, man, woman... camera... TV?, Wed 23 May 2012, 9:01, closed)