How Do You Spell GAT ON IT?
Pronunciation: [ɡˈat ˈɒn ɪt] (IPA) 
The phrase "gat on it" is pronounced as /ɡæt ɑn ɪt/. The word "gat" is a slang term for a firearm or gun, and "on it" means to be ready or prepared. The spelling for "gat" is influenced by African-American Vernacular English, which often drops the final consonant of words. So, "gun" becomes "gunn" and eventually "gat". The spelling of "on" and "it" are standard English. Overall, "gat on it" is an informal way of telling someone to be prepared for a potential threat.
