That would be followers of Wilhelm Reich or folks influenced by same. No primitve people does this, but chimpanzees do, and Reich pronounced it natural. This is the same guy who invented the orgone box. The idea of this is that jerking off in a specially designed closet will make you more sane. Tapping into the orgone energy of the universe you see, but more expensive than common ordinary jerking off.
In Texas it is "illegal" to procure organs/severed limbs for compensation; it is possible that a hospital worker could steal such castoffs for himself (although the theft would be a crime that the hospital could persue).
Some mutilation of a living person (even consensual) is prohibited in America (there have been other incidents of men meeting over the internet to eat one of their sex organs).
What a world! What a species! Or should I blame the devil for having a really nasty sense of humor?
Certainly some seem to be Darwin award winners (this computer chip guy participated in self-cannibalism AND eliminated his own reproductive organ before he was killed).