Scoff is usually a word used to desribe someone with a lack of table maners. It creates the picture of a person eating fastly and letting the food rubn downm their face. It craetes the impression of a perosn who is extremely hungry and eats like a pig-lac of manners and just shoves the food down "inhaling" the food.
Here is a great example of something that I came uop with to illustrate the explanation: The rotound child missed her midday sncak and was a crab since she felt that shee needed the snack no matter what. When dinner time finally arrived and the plate of chicken and brocoli was set in front of her she slapped on a thick napkin around her neck and scoffed the meal down within a matter of minutes.