To think this is rude

[Sony3203]

My DP and his entire family all slap their mouths very badly when eating regardless of what they are eating and I find it extremely annoying and rude especially when at the dinner table. I never know how to ask them to stop politely but it always really puts me off my own food. His younger sister is also constantly ill and therefore has a stuffy nose all year round which she never does anything about and never uses a tissue or anything. Her nose is always full so she always just very obviously and loudly 'breathes' it back in and decides to breather through her mouth instead. She always does his while eating dinner as well and the noise of her snotty nose really grossed me out when trying to eat my food. Would this bother you? Do you think IABU?

I feel quite ill reading some of these posts.

YANBU. I'd actually not even eat with them. DS has a friend who eats like it, I avoid having him over for tea as it drives me mad and is sooo loud. I mention it in a general 'can we all remember to keep our mouths closed when we eat' but he doesn't get the hint.

My nan constantly talks with food in her mouth, it's very annoying as she'll do it on the phone too.

Table manners seem to be going downhill and more and more people seem to think eating and chewing like a pig is perfectly acceptable.