Don’t care what you call me....just don’t call me late for dinner so I can scoff up a meal. (smirk)
If you scoff at my food you will be asked to leave. Scoff is a real legitimate word in real dictionaries. Scarf as a verb is an old commonly used but not entirely respectable word.
I looked it up and you are correct. the 5th useage of scoff derived from the south africans is to eat