I know that remark was tongue-in-cheek, but I doubt if you could make $15/hr at McDonald's flipping burgers. I don't know what the current minimum wage is, but it has gotta be close to half that. It's around 7.20 to 7.50, I believe.
If I were to work in fast food, I'd work at a Quiznos - less grease, and apparently they pay at least a tiny bit more. And you get free Prime Rib and Peppercorn.