This is why you were taught to 'Mind Your Manners'

http://www.misophonia-uk.org/faqs.html

What is misophonia?Misophonia literally means "extreme dislike" or "hatred" (miso-) of "sound" (-phonia). The term was coined by US audiologists Pawel and Margaret Jastreboff in 1991. The vast majority of people joining self-help groups who have an extreme reaction to everyday sounds report an intriguingly similar set of symptoms. These may vary from one person to another but generally speaking:

* the age of onset will often be around 10-12
* the "trigger" sounds which tend to be most difficult are connected with eating and breathing
* the reaction starts with the sound (or some aspect of the sound) and often develops to include actions associated with the sound and even anticipation of those actions
* the closer the sufferer is emotionally to the "trigger" person, the more offensive the sound tends to be
* the reaction is experienced most commonly as extreme rage
* the trigger sound can create an overwhelming fight or flight response in the sufferer, so they experience a desire to do extreme violence to the maker of the sound, or to escape the vicinity of the sound at all costs. 


These people exist.


I am one of them.


Chew with your mouth closed or I'll kill you in your sleep.

:)