As for
fittle, I take it you are from Birmingham or the Black Country, ridethetalk. I base this on the word being included in an article, "The 50 sayings you only know if you're from Birmingham or the Black Country" in the Birmingham Mail in 2017:
Fittle is a local word for food, and therefore 'bostin' fittle' is a way of saying great food - it's also the name of a restaurant in Dudley.
Up until this year I would have had little hesitation in rejecting this suggestion. It's not listed in the OED or Wiktionary. The only professionally edited dictionary I could find it in is the
Century Dictionary, an enormous dictionary more than 100 years old. According to the preface of the online manifestation of this dictionary:
In a way The Century Dictionary can be considered the Titanic of dictionaries, fabled in its day as the largest, most comprehensive dictionary yet completed.
Examples of the word actually being used are thin on the ground.
However, in a forum discussion a while ago, many people felt that any "actual" word should be allowed, however rare. I wasn't totally convinced, but I have been more easygoing about accepting new words. With some reluctance, I'll add
fittle as a (very) rare word.