What does "Pig in a blanket" mean?

If you hear a waitress say "Pig in a blanket" at a diner or restaurant, it's just another way to say "Ham sandwich." You will also hear this referring to sausage or hot dogs, sometimes even wrapped in a pancake. There are hundreds of other popular diner lingo phrases - to learn more, check out the links below or browse the rest of our restaurant slang dictionary.