a knife is used for cutting and spreading otherwise, it is laid on the plate or table. fast foods, such as chips, fried chicken , ้hamburgers, pizza, and tacos, tend to be eaten with the fingers. in general, table manners are casual, although it is traditionally considered impolite to rest elbows on the table. there is a significant difference between what people may do at home or in a fast-food restaurant, and how they act in a more formal restaurant