When someone has a big ol’ booty
“GYATT THAT THANG MOVIN MOVIN”
Gyatt is a term used to define that someone's butt is huge, typically another way to say, "God Damn!"
Sentences for this term are typically like "You've gyatt to be kidding me", or " I've gyatt something in my eye".
Gyatt, you have a big Booty!