A sandwich requires two pieces of bread

The argument

A food item requires two pieces of bread in order to qualify in the category of "sandwich". This is according to the Merriam-Webster dictionary, a hot dog is one piece of bread with meat and fillings inside. The mere fact that a single piece of bread has a unique shape does not make it a sandwich. A piece of toast with toppings would not be considered a sandwich, because it is a single piece of bread. A hot dog is the same thing, just with a specially shaped piece of bread. In fact, the definition of a hot dog in the dictionary is "a frankfurter with a typically mild flavor that is heated and usually served in a long split roll". This includes no mention of the multiple pieces of bread required for classification as a sandwich and does not even necessitate the use of bread at all as a critical part of designation as a hot dog. Thus, by nature, a hot dog would not qualify as a sandwich. Its own definition does not allow it to fall under that category and it should not be attempted to be placed there.

Premises

Counter-arguments

Although the hot dog definition may not classify it as a sandwich, the definition of a sandwich certainly does. By definition of the dictionary, a sandwich considers a split bun with filling as a form of sandwich. It's a rectangle/square situation, but it still allows hot dogs to be classified as sandwiches.

Rejecting the premises

The standard home chip or noodle sandwich involves folding a single slice of bread in half.