Boi can be used in the occasion where some one either says or does something stupid or when roasting/dissing/clowning/bagging on someone usually the right hand is directed in someone’s direction 👋
1 Zach: Boi you built weird . Damian: Boi why you talking your head tilts when you walk
2.troy: I hate when someone asks to borrow money. Troy later can I borrow money. (Boi)
you say boi when somebody does a very dumb thing or says it.you can also say it when you are about to roast somebody. when you say boi you got to point you hand at the person.
Bob: i hate the U.S i am moving to California.
You: Boi
another example for a roast
Mark: i got this sweet hair cut (terrible hair line)
You: Boi your Hair line looks like 20 mt everests lined up together.