Comedian Ron White, who famously smoked cigarettes and drank scotch during his sets, used to tell a joke about vegetarians. “You ever seen a healthy vegetarian?” White would ask his audience. “They look like s***. They’re all plump and gray.” “It’s because their bodies become intolerant of things they need, and I’ll give you an example,” White continued. “I’m on the way to the Melrose Improv in Hollywood to do a set with my buddy, and he says h…