A BB (or plural BBs) is a dude that lives in your block and you would define him a pussy, a bitch or something similar. It is the short form of Block Bitch (or Block Bitches). Can be used in a cooler way with emojis ➡️ “🅱️🅱️”
A: Oi fam do u wanna hangout 2night?
B: Nah man i dont like going outside after a certain time
A: What a BB
B: Yo dude look at that chick, she’s so cute
C: Go talk to her then
B: No, i don’t really want to do it
C: You’re just a BB, shut up