i think it is the hardest type of clue to get a grasp of and i'd never heard the phrase before seeing it on this forum - along with many others which aren't useful except in places like this.
Thank you for that flurry of guidance.
Must be havin a blonde day because I'm still not seeing 8d. and 14a.
If I don't ask I'll never learn, so where does the f come from in deity?
Ta.