The Loco Moco is a Hawaiian breakfast dish of a hamburger patty on rice topped with fried eggs and brown gravy. There are many substitutes for the hamburger, but there is no know low calorie version. Wikipedia says the Loco Moco originated in Hilo, Hawaii in 1949 at the request of some local boys who were after some quick cheap eats. Loco, Spanish for crazy, was a nickname of one of the boys, and moco was picked to rhyme.