An adjective meaning "a bangin-ass girl" in relation to her female companions. It is derived from the base word "blessed", and is often used by tribes in southern zimbabwe, and New Yorkers.
"Girl, you's blest."
"You're so sweet. Let's have sex."
"Ok."
If someone are saying/said something stupid/weird, you can say «shatcha blest» to make them silent, or make them cautious about the stupid/weird thing they are saying or said.
You can also use the saying against someone if they are doing/did something stupid/annoying/weird.