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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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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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yb pretty much indicates "ya boy"
Tom: You heard what happened between Ron, Kim and Rob yesterday?
Finn: Yea lmao, yb hitting it from the back, yb hitting it from the front, and yb in the middle cheering them up.
by lil gard May 12, 2016
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An abbreviation for the words "Yeah buddy". An adjective or phrase used to describe a particularly awesome/exciting/sexually stimulating action or activity.

Often substituted for phaboom or awesome sauce, this word is the opposite of eeb.
Bro one: "Remember that one time I let 11 dudes crash at my sick place in Vermont and ski all weekend"

Bro two: "For sure man. You pulled a massive YB"

Bro three: "Yeah dude. That was almost as YB as that time your boy tumbled face first down the bunny hill"
by The Humes Expert January 12, 2014
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Young Bop, a young girl who bops (gives lots of head to multiple people)
Person 1: Yeah, that one girl is a real YB

Person 2: For sure! She's only a freshman in high school and she's bopped everyone on campus!
by Suppp?? January 17, 2012
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YB is Scottish slang for 'Ya bass'. Although we usually associate bass with a fish (Sea Bass), in Scotland it's short for B**tard.
by Batters_ August 06, 2010
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