A term used to describe anyone who has the following characteristics: lazy, good for nothing, cheap, always drunk, always sober, dancing with a hot chick, dancing with an ugly chick, plays video games all day, wears better clothing then you, wears worst clothing then you, obnoxious, says stupid things, does stupid things, hoards food, sleeps all day, eats all day, pisses in the sink, pees in pools (not while in them, stands on the side and pees in them), likes tequila, hates tequila, eats the last of piece of food, uses the word agwan, and of course eats cheese!
Guy 1, "Hey look at what Duncan is doing!"
Guy 2, "He is such a rat!"
Guy 3, "Wow, what a rat."
Girl 1, "Rat."
Guy 4, "You are all rats!"