The hamburgers dished out by Conway's are genuine whoppers – a half a foot across, served on broad-domed buns, accompanied by shoestring french fries and titanic pitchers of soda. Panavision-wide but not gourmet-thick, they are happy lunch counter patties with a good oily smack. They are sold whole or half, topped with regular cheese (or, as the ingenuous menu advises, “a generous serving of Velveeta cheese”) or zestier jalapeno cheese, or served as a “Hickory Dickery Top” infused with smoke flavor and smothered with chopped onions and barbecue sauce.