Smiffy et al, I think 'mellifluous' is commonly used in the context of script whereas 'dulcet' would be more apt in this context referring to a discussion over tea and biccies. As for the biscuits, McVities rich tea bisuits I would think would be for a bollocking whereas Hobnobs (or maybe Tim Tams for our Aussie colleagues) for when you've earned some praise, although I used to be partial to custard creams.