Have you been pissed off just by sitting beside someone who was eating? Because you could hear all the munching and tearing going on? Have you tried to avoid watching someone move their mouth in such a way as to replicate hyenas and cows during feeding? You want to witness these, go to a Buka near you, even a fastfood joint.
Some eat and make whistling sounds, some eat and talk loudly, some eat and cough, some stick a finger or two in their mouth to pluck out an irate bone on flesh while chewing!
Eating habits of people can be so annoying to watch but what can we do but to carry face or steal glances? i know i watch sha.