1) An extreame overexaggeration of something someone did, but inturn makes them look like there as cool as a paper sack
2) Someone of a lower class who is self-centered
3) Slang used in the Midwest to disrespect someone
That kid over there is totally being a hyatt right now!
This kid said he went snowboarding and at the same time he had 3 broken bones, but that didnt stop him from shreading it up on the slopes. DONT BE SUCH A HYATT!!