GYATT is a term used to describe someone (normally
female) with a
large booty.
Sometimes, this term is used for guys because they might have 2 Jupiter-sized springs on their booty.
example one,
female:
person 1: woah, look at that gyatt.
person 2: jeez, that’s a huge gyatt fr.
example two,
male:
person 1: OMG I GYATT
SOMETHING IN MY EYE.
person 2: OML HE DOES HAVE A GYATT.