Image result for throwing shadewww.dictionary.com The expressions "throw shade, "throwing shade", or simply "shade", are slang terms used to describe insults. Merriam-Webster defines "shade" as "subtle, sneering expression of contempt for or disgust with someone—sometimes verbal, and sometimes not" .
Goodness thank you, thats a lot stronger than I thought, I’ll be careful before I use that to be cool with the young people or maybe I will use it for surprise effect lol