You know, sometimes billionaires just really want crummy fast food, but, of course, they just go to Wienerschnitzel or AM/PM, so instead they have to buy something that show they're still fancy and classy -enter the foie gras corn dog. Now you're eating fancy.
Link
I haven't tried it myself, but here are some picture : http://www.fastandfood.fr/2010/12/16/chronique-du-burger-au-foie-gras-de-quick/