Short for 'your boy' or 'your brother'. An embarrassment that nobody likes yet still hangs around. It's an attempt to shrug off ownership of the person.
"Hey look it's YB Roger..."
"Fuck that! He's YOUR boy!"

"YB was asking about you yesterday..."
"Gross I hate that guy!"

"Why does Chris always come around here?"
"I don't know, he's YB."
by SgtTarzan November 3, 2008
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youngboy as in the raper from (br) he is the greatest to walk earth🖤
is that yb?
by kayron October 23, 2020
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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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your balls
usauly used when dissing someone and they anoyed you
"i hate that class"
"u kno what YB"
by ananimis April 25, 2008
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Your Breath Stinks -When someone is trying to open their mouths to say something or yawn but have oral hygiene issues
Micheal: "this girl keeps yawning next to me in class i can't breathe "

Chris : "Damn bruh tell her YBS"
by BEASTWORDS January 23, 2022
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Youngboy makes better definitions 🤡
YB makes better examples 🤡
yb better
by ok b July 30, 2021
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