It's like a fast food turducken. Pork between chicken between beef! See also: The Orange Chicken Chipotle Burrito (I would've added the chicken to a vegetarian burrito instead).
Idea: A personal pizza with a Crunchwrap Supreme as the "dough." Truly combine Pizza Hut and Taco Bell.
I tried Five Guys whilst in New York City and distressingly received a "regular" burger with two patties.
"Oof. I still have four other eateries to try today!"
To me, a "little" burger is a slider.