Slang for the curse word "Shit"
Shait means shit. It's pronounced like Thai but with an S instead of a T and with a T at the end.
Person A: Wauw you can really see my freckles! Holy Shaaaiiiit!
Person B: Uhm... don't you mean shit?
Person A: same shit different toilet!
Person B: wait... so it means the same thing?
Person A: Yea man!