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Given the following post, respond as if you're commenting on Reddit:
human
CMV: Hot Dogs are sandwiches

First thing's first:

What's a sandwich?

In my view, a sandwich is best described as a food that is created by placing a filler between a piece or pieces of bread that are either wholly separate or have been sliced or separated in some way.

By this definition, a hot dog is a sandwich. You take a bun, slice it down the middle, put something in it, and eat it. No, it's not the "standard" sandwich you might think of with two flat slices of bread and peanut butter/sliced meat/whatever the hell you want in between. But it's a definition that I think perfectly describes that kind of sandwich and also has room for less conventional items that are still generally seen as sandwiches, like subs.

Now, I'm not saying my definition is perfect. But if someone has a better one that excludes hot dogs, I'm dying to hear it. So far all the "hot dogs aren't sandwiches" arguments I've heard have been very unsatisfying. A few examples I've seen kicking around with quick responses, just to get them out of the way:

* A hot dog has a vertical orientation, while sandwiches are horizontal
   * OK, but you can easily hold a regular sandwich vertically. You can also hold a hot dog horizontally. Many subs are eaten more vertically than horizontally.
* A hot dog is its own thing (just the sausage)
   * Yes, a "hot dog" may also refer to just the sausage. But a hot dog sausage in a bun is commonly called a hot dog, and that's the kind of hot dog I'm talking about.
* A hot dog is a taco
   * A taco's bread wrapping is not sliced or separated in any way: it is one piece of continuous bread (until you bite into a hard shell taco and it shatters into a thousand pieces, of course). In my opinion, a taco is a wrap, and a hot dog is a sandwich. If you're going to call a hot dog a taco, you're also saying subs are tacos.
* Well what about burritos? Are they sandwiches?
   * No. Burritos are wraps, like tacos and gyros and any other bread-contained food delivery device that does not involve sliced or separated bread
* Your definition means that open-faced sandwiches aren't sandwiches!
   * Correct. "Open-faced sandwiches" are not sandwiches. They are food that is placed on top of a piece of bread. They are liars.
* Only boomers/Republicans think hot dogs are sandwiches
   * This has nothing to do with whether a hot dog is a sandwich or not, and it's one of the lamest takes I see because it's entirely emotionally-driven and contains zero evidence or logical arguments.

CMV!
gpt
Hot dogs aren't sandwiches because the contents of sandwiches are sliced or flattened in some other way. In no other context would a cylinder be put into a sandwich.

Have you ever eaten a whole head of lettuce between two pieces of bread? How about a whole steak, unsliced and not pounded thin, on a bun? Have you ever had a sandwich with a whole pickle in it instead of slices? Even a piece of fried chicken in a sandwich was likely sliced, pounded flat, or butchered in some way to fit a sandwich (like a thigh). When you put pepperoni or salami on a sandwich, do you include it in sausage form or sliced? Cheese? Sliced. 

The only notable exception to this is meatballs, but even then we're talking about one type of sandwich with multiple meatballs to fill out the bread. 

A hotdog doesn't follow this rule. It's a whole sausage, unsliced and still cylindrical. Hot dogs are therefore not a sandwich.