A day where you just want to break something, preferably something that will scream and/or bleed as you do it. You may or may not know of any direct causes, but most often, something bad happened early in the day which started you off in a generally bad distemperment that only got worse as multiple unfortunate events compounded to effectively gang-rape and murder your overall disposition.
Your bet bet is to stay away motherfucker, it's just one of those days.
A plate of brown consists of foods that have little to no nutritional value, and are typically deep fried. A true plate of brown will also be accompanied by a dark soda.