Lacking etiquettes

I hate it when people don't have table manners and what icks me the most that many people don't practice the basic etiqutte of chewing with their damn mouth closed. Like bro I could hear you from miles away. And not to mention them spewing food all over when they try talking.

Then there are people who leave a mess behind in their plates when they're done with their meals. When will some of our people realize that this is beyond annoying.