A useful substitute for the word "shit". This G-Rated slang is to be used in public settings, such as school when your teacher wouldn't approve of you saying "shit".
an individual whom acts in a scheming and sneaky (weasel rat bastard) manner in select situations
Anthony Tavormina is a shadey shiste because one called him and saw him ignore the call. IN addition his cellphone is prepaid and he has a "wednesdayshirt"!