That link was... an interesting read. I'd say it merits a NSFW tag but it's kind of obvious from the title.
> Pinyan had previously lost the ability to experience certain sensations after a motorcycle accident, and he had begun to seek out increasingly extreme sexual acts
Almost feel bad for the guy if it weren't for the animal cruelty.
https://en.wikipedia.org/wiki/Enumclaw_horse_sex_case