"After multiple visits in the last three months, I can no longer recommend Boomerang Diner to anyone in Duncan. As of today, 5/17/2022, the restaurant staff appeared lazy and indifferent towards guests. There was only one menu card in the entire restaurant, which is unacceptable for a major restaurant chain. The staff seemed unwilling or unmotivated to address the issue of the missing menus. The food was subpar and poorly cooked - my hamburger was bland and slightly undercooked, leading to a lackluster dining experience. The onion rings I ordered tasted like frozen and deep-fried rings, resembling those from other chain restaurants like Sonic. The meal was overpriced and not worth the $10.35 I spent. I advise against dining here if you are looking for a decent meal at a fair price. It is better to seek out other dining options in Duncan."