The patrons of Joe Metheny's barbeque stand suffered this exact fate, though they did not know it at the time. Metheny, known as "the Cannibal", servedhis victims' flesh with a mixture of pork.
Metheny specifically targeted people who society would not necessarily notice had gone missing. Once in a fit of rage over his wife's abandonment of him, Metheny encountered and promptly killed two homeless men with an axe.
With reports clocking him in a over six-foot and weighing more than 400 pounds, Metheny easily overpowered most of his victims. And to dispose of said victims, he used his barbeque stand front, a morbidly efficient method of disposal.
Metheny's tale serves as a cautionary warning. Though many food trucks and food stands provide excellent meals from excellent chefs, remember that sometimes it is more important to stay vigilant than stay fed.