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
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YBS is acronym which means

Y:ou've
B:een
s:chooled
"noob-WTF just happend
pro- YBS NEWBIE!!! wait you probly dont know what that means
noob-No
pro-you've been schooled
noob-Oh
pro-noob"
by MYC{Br00talz} July 19, 2009
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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
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Yb stands for young boul. A philly term used when talking to someone smaller than you.
by Philly215! April 24, 2017
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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
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