The one that sticks in mind was when I was all of 21 and invited to a posh dinner at my then-boyfriend's boss's house. I had been brought up that it was polite to bring wine and to compliment the food. I did this, and there was a deadly silence while the 50-something boss and his wife gave each other eloquent looks, then pointedly changed the subject. No one spoke to us for most of the meal, and then the wife waited until the conversation died down and instructed me that it was very, very rude ever to comment on your hosts' food.
@SarahAndQuack wow! I’ve never heard that about complimenting the food before, that’s bonkers!
It’s only through Mumsnet that I’ve heard that in some circles it’s considered rude to bring wine to a dinner. Something about how the host will have chosen wine especially for the food and now you’ve put them in an awkward position where they feel obliged to serve your wine instead? Of course I take no notice and would always bring wine anyway (or did, back when I still drank wine - I’m more likely to bring chocolates or something now that I’m sober) because nobody I go to dinner with is weird about things like that.
Something I always feel very strongly in these situations though, is that however ‘rude’ a behaviour like that supposedly is or isn’t according to the rules of etiquette, it is the absolutely pinnacle of rudeness to point it out or correct someone (especially a guest!) A truly good and well-mannered host would surely breeze past your supposed infractions of etiquette and would never make a big deal out of it or embarrass you.
I used to know a girl at university who would go on and on about manners and good upbringing and speaking properly, all that stuff. She had a very irritating habit of correcting people’s grammar in everyday speech and being insufferably smug about it: ‘you mean my friend and I’, ‘it’s if I were not, if I was’. One day it pissed me off so much that I said something like ‘you know, I think someone who cares so much about good manners and politeness would know it’s extremely rude to correct people like that’. She turned red and never did it to me again!