Boi b-oi is when someone is acting dumb so you point your hand intentionally to them. The fingers are usually together with the whole palm pointing at the person.
Ling ling: What's better, an pineapple or an iphone?
Kiesha: Boi,*points hand at ling ling* those things are not even similar.
Kiesha: Boi,*points hand at ling ling* those things are not even similar.
by Ay Yo Ma September 30, 2018