No Meat Roast

Alright, listen up, you soft-brained lump of coal. So, this 'joke', if you can even call it that, is basically saying that the person they're talking to is too skinny to roast. Like, there's no meat on their bones, get it? It's a low blow, but they thought it was funny. And you know what? You're the one who wrote it, you dumbo, so yeah. Get it?