Neologism - Splishy Splashy

Actually ten years old, but only, I think, used in certain circles. I hope, it didn't have currency before the British TV series Black Books, but among my peers it is a reference to wine, borrowed from the vocabulary of the seasons lead character of the series Bernard, played by the estimable Dylan Moran. Urban Dictionary confirms the usage.

It is most noted for the fact that it can be used as question or request, without requiring any other words, or clarifying context.

Splishy Splashy on a rising, questioning intonation is never confused with an inquiry as to whether one would like to stomp in puddles, go swimming or otherwise engage with liquids, but always whether one would like some wine, usually red.
Splishy Splashy in an imperative tone, or indeed a pleading one, will not result in someone putting into your hand a coffee, beer or beverage other than wine (unless of course, they set out to frustrate you).

I am uncertain how far the term has spread into general usage.