Well, actually Iron, the one and only time I've heard the question used in that context was when an English master asked me in boarding school. After that.......never. Nobody. Frankly, i think it's a load of bollocks.
This is how intellectual snobbery gets perpetuated.
Quite right you should be unfamliar with the phrase. I suspect the only people who use it are homos in Oxford and Cambridge.
Still, thanks for the Chinese food thought.
I'll tell you what...I'm a big Raymond Chandler fan...and you know how Philip Marlowe always had a bottle of whisk(e)y in his drawer? I have a bottle of chilli sauce.
Ravs