Also: While looking up the full name of the Earl of Sandwich, I found this tidbit on Wikipedia:

In the United States, a court in Boston, Massachusetts ruled in 2006 that a sandwich includes at least two slices of bread and “under this definition, this court finds that the term ‘sandwich’ is not commonly understood to include burritos, tacos, and quesadillas, which are typically made with a single tortilla and stuffed with a choice filling of meat, rice, and beans.”

The more you know.