[justlurking]

If the two of you would quit arguing and look at a dictionary, scoff and scarf have both been used to mean "eat quickly":

http://www.dictionary.com/browse/scarf

http://www.dictionary.com/browse/scoff

If you follow the derivation, "scoff" was also a noun for "food" or "grub".

And a footnote offers an explanation for the mutation to "scarf":

1955-60, Americanism; variant of "scoff", with r inserted probably through r-dialect speakers' mistaking the underlying vowel as an r-less ar

[Liz]

Thank you......good research.

Complete vindication is nice.