Shit on a Shingle, sometimes known as SOS for those too polite to use any toilet humor, is a food that in essence consists of chipped beef cooked in a el cheapo white sauce (usually milk and cream thickened with flour), and served on toast. I suppose the beef represents the shit and the toast serves as the shingle.

To make it you do the following:

  1. Put the milk, cream, and beef into a saucepan along with some black pepper and whatever other spices you think would make this more edible.
  2. Heat, stirring constantly, until the beef is rehydrated and the sauce is hot.
  3. Slowly add flour to thicken, just as you would to make gravy.
  4. Serve on toast, buttered if possible.

As far as I can tell both the meal and the name originate from the Army mess halls during World War II. It was easy to make, lots of calories, lots of protein, and a captive audience.