Tl;dr dude gets in an accident, has his leg amputated, and asks some friends if they want to come over and eat it, just for lulz. In tacos, because one of the friends’ partners was a chef. Apparently, it tasted a bit like beef, not chicken or pork as usually reported.
As a content warning, asides from the whole premise, the linked article does include photos of said meat being prepared. They’re no more graphic than any other photos of meat used in cooking (i.e. there are no identifiable human parts), but even as someone who’s a ravenous carnivore I still found them mildly unsettling.