...today's pet peeve: people with braces who somehow think that they have a free pass to just NOT close their mouths when they eat, or they open their mouths even wider & do excessive sucking to help keep bits of food from getting stuck in their braces.
News flash: been there, had braces, didn't smack. If you can't eat XYZ in public because you can't keep from smacking or close your lips around it---then don't frickin' eat it in public.
I went years without a hamburger for that very reason. I also missed out on ribs & corn on the cob, to spare the general public from seeing that or hearing that.
Eating noises are disgusting.
That's my $0.02.