Jamie Oliver used to use the word Cheeky a lot, years ago. Dunno if he's spread it around? As to it referring to wine, it's ridiculous! I make my own wines and to be honest, I'd rather drink them than a lot of shop bought as I know what's gone into them. When I buy wine by the case from Tesco, (basically because it's on a good offer), sometimes it's really difficult to find information as to whether it's vegetarian or not. A lot of French wines aren't - God knows what they put in them! I have a recipe from France for 'Cock wine'. (Wonder if that word will come out as asterisks?) Basically, they steep a whole, plucked fresh bird in the fermenting wine. Was it made by accident once, many decades ago? I've no idea and no, I haven't tried it and shudder at the thought! My sister is a strict vegetarian, who likes a glass of wine, so I have to be stringent with ingredient research.
Back to the subject - I have a lot of wine making books and have never seen a recipe where the result is described as 'cheeky'. Nor do I remember Oz Clarke or Jilly Goolden using the word - although they must have used every other adjective under the sun - to describe a wine and they were supposed to be experts. (I wonder whatever happened to 'fat man in the kitchen'?) There was a glorious spoof of it, done by Vic and Bob many years ago. Wonder if it's on youtube?