I had one last year, and believe me when I say it hurts a lot. Like, I wouldn't wish that on anyone at all.
The procedure goes like this: firstly, you have to snort a full dish of spaghetti with bolognese sauce until your nasal cavity becomes bolognese itself and your nose starts rotting from all the food inhaled. Secondly, the food would reach your wrist and start healing all the pain you had, but you'd end up passing out in the process and start hallucinating all sorts of creepy stuff, like Dark Enetro dissing you online and everyone supporting his claims or Serraionga derailing and effectively killing your thread by posting mind blowing shit, the kind of shit that makes everyone go like "hoLY SHIT SERRIAOGNA POSTS ARE SO GOODO XDDDDDD". Usually, this step is the hardest as it makes people suffer and completely forget that their wrist is in the process of healing while they're witnessing all that creepy shit, but if you're capable of withstanding all the pain this makes you go through, then you would recover completely. Nothing would hurt you ever again.