Gyat is a synonym for "woman's ass" popularized by the streamer YourRAGE. It can also be used as an abbreviation for "God damn!"
Child 1: Look at her gyat!
Adult 1: What is a "gyat"?
2:
Person 1: Gyat damn, I'm tired.
Friend 1: Me too,
2
Short for Bagel Related Injuries. Used in hospitals.
1: She got hurt by a bagel..
2: A bagel?! Now that's called a BRI.