Gyatt means a fat ass, or God damn, referring to when someone would see someone else have a big ass.
Gyatt; one who has a huge gluteus; butt.
Kai cenat: GYATTT
viewer: wat dus dat mean?
Kai cenat: GYATTT
viewer: wat dus dat mean?
Kai cenat: GYATTT
viewer: wat dus dat mean?
the person with a gyatt: is showing there booty
Basically a way of saying that someone has a large behind.
A word to describe shock (or someone's giant booty)
Person A: Oh my Gyatt!
Person B: What?
Person A: That girlie got a gyatt!!