What does regular burger mean?

A "regular burger" typically refers to a standard hamburger that includes a beef patty, lettuce, tomato, pickles, onions, and condiments such as ketchup and mustard, all served in a bun. It contrasts with gourmet or specialty burgers that may feature unique toppings, sauces, or types of meat. The term can vary by region, but it generally implies a classic, no-frills burger experience.