A "young boul" or if you're in a gang, "young blood" for all them red niggas.
Did you see Tyrone over at Tonya's yesterday, he was shootin up the whole place..that yb be growing up.
by Curls(: December 12, 2016
Get a Yb mug for your dad Abdul.
Yb stands for young boul. A philly term used when talking to someone smaller than you.
by Philly215! April 24, 2017
Get a Yb mug for your Uncle Paul.
Person 1: I love Drake, he’s my favorite rapper
Person 2: yb better🤡
by Pimp & b May 16, 2021
Get a Yb mug for your buddy Yasemin.
Young Bitch Syndrome - when a younger female is acting up over stupid shit
John: "this bitch be snap chatting me random shit just to keep up a snap streak"

Marvin: "Damn bruh she got some major YBS"
by rahrah519 November 01, 2018
Get the YBS neck gaiter and mug.
Goon 1:Lets go to YB house.
Dumb Goon 2: Who's YB?
Goon 1: YO BITCH!
Everyone around: HAHAHHAHAHA.
by YOUNGDINO December 06, 2010
Get a YB mug for your mate Jerry.