My favorite annoyance is when people hold their food and bounce it up and down a few times before eating it... like they are weighing it or something... it is so funny.... like i'm just about to eat it, but i have to know how many grams it weighs first.
Sometimes I just like to pretend I'm Jabba's kind of scum (though he is vile) by carrying a thermal detonator around with me when I have to negotiate with someone.
Thanks for asking the question, this issue must be addressed! Everyone has the ability to eat quietly, we're no longer cave men so stop behaving like it. This must be one of my biggest pet peevs, probably because my brother is a complete animal and he should be caged and fed twice a day... that's just my opinion.
smacking lips = can taste the food much more
jaw cracking = not sure what this is but this sounds dangerous