A form of bitching about someone in a way that leaves the throwee oblivious to who you're shading about. For example: "I have the friend, and we're like, really good friends, but she is such an attention whore!"
1. To effortlessly and creatively read bitches all day, every day.
2. A sick bitch, honey, who suffers from the condition in which she exudes fierceness and attitude so naturally that she effortlessly and creatively reads bitches left and right without breaking a sweat or, at times, even consciously.
Fierce bitch walks into room and throws shade on tired looking friend wearing comfortable sweats and no makeup: "honey, you look so pretty today."
Friend: "You mean bitch. You really do suffer from throwing shadesyndrome. You must be one lonely bitch!"