Stories of fat vampires are not new. These creatures were called pishtacos and are a classic Peruvian legend. They are known to stalk the night on deserted roads and use their magic to rob travelers of their fat. Recently, the legend has resurfaced due to actual arrests of gang members in Peru who are purported to have been bonking unruly travelers on the head, then taking them to a safe house and rendering them into fat to sell on the black market. Some estimates say that as many as 60 people fell prey to these gangsters before they were caught. Of course, some question the official story, partly because most of the attributed murders have not been proven, but mostly because they have trouble believing that there's any kind of market for human fat. It was also considered strange that these men had no interest in selling any of the other, more valuable body parts. Perhaps the answer lies in the legend itself. The pishtacos would not have any interest in other organs, and selling the rendered human fat would be a good cover for their true operation-feeding on the fat of the living so they can sustain their undead immortal existence.